For more than a year, the mother of Thomas Valva, who was allegedly killed by his New York cop father, pleaded for child welfare workers to intervene and protect her children from neglect and abuse at the hands of her estranged husband and his fiancée.

Eight-year-old Thomas died of hypothermia on January 17 after he was allegedly starved, beaten and locked outside overnight by his NYPD transit cop father, Michael Valva.

Thomas was laid to rest earlier this month in the Long Island neighborhood of Melville and just days after his funeral, his mother, Justyna Zubko-Valva, revealed that she was worried about the child and his brother, Anthony, after Valva received temporary custody over the children.

In September 2017, a judge granted Valva custody over all three boys and even barred Justyna from seeing her children, according to court documents.

On the night of the ruling, Justyna reportedly told Kimberley Berens, who ran the Fit Learning school, which educated autistic children before they went to regular schools: 'He's going to kill my kids.'

Since those initial revelations, Justyna has since gathered documents, obtained by the New York Daily News, that shows how child welfare caseworkers missed or ignored signs of the alleged abuse.

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For more than a year, Justyna Zubko-Valva (pictured), the mother of Thomas Valva, who was allegedly killed by his New York cop father, pleaded for child welfare workers to intervene and protect her children from abuse at the hands of her estranged husband and his fiancée

Eight-year-old Thomas (left and right) died of hypothermia on January 17 after he was allegedly starved, beaten and locked outside overnight by his NYPD transit cop father, Michael Valva

Justyna told the newspaper that she began meeting with Child Protective Services in 2017, the same year she lost custody of her children.

In one December 2017 meeting, she recalled how caseworker, Michelle Clark, declined to take any evidence detailing the abuse.

'She informed me she will not take any evidence from me,' Justyna wrote in the documents shared with the Daily News. 'If I try to provide my evidence to her, she is not going to take them into consideration.'

Clark submitted five reports between October 31, 2017, and January 15, 2018, and not one of them found safety factors that 'place the children in immediate danger'.

On January 13, 2018, a neighbor confirmed to Justyna that Valva hit Thomas repeatedly on his lower back, right side and buttocks after the child accused Pollina of hitting him.

That incident forced Justyna to file another report against Valva and Pollina. A caseworker then reportedly went to the couple's home but they refused to let the worker inside.

A few days later, Thomas told Clark that he was still in pain from his father’s beating. Clark later closed the case.

CPS responded to that complaint by filing an order of protection against Justyna because Valva constantly complained 'he was being harassed'.

In October 2018, Justyna filed a a request to remove caseworker Jessica Lantz for 'failing to report Valva and Pollina’s neglect of the children,' according to the Daily News.

In one December 2017 meeting, Justyna recalled how caseworker, Michelle Clark, declined to take any evidence detailing the abuse

Justyna said she believed that some of the caseworkers were trying to downplay the seriousness of the alleged abuse at the hands of Michael Valva (left) and his fiancee Angelina Pollina (right)

Justyna believed that Lantz was downplaying the seriousness of the alleged abuse. Three investigations into Valva were later closed that year.

In the months leading up to Thomas’ death, 17 calls were made to a child abuse hotline about the boys, records revealed.

Thomas' worried teachers had called a state abuse hotline about 20 times reporting that that he and his brother Anthony arrived to school hungry, and bore signs of physical abuse.

In one instance the boys brought urine-soaked backpacks to school.

One complaint was filed against Valva and Pollina with Child Protective Services in January 2019 by a school official.

'Thomas, age 7, presented a right, swollen black eye today that he didn’t have within the past two days,' the complaint said, according to the Daily News.

'There is a history of physical abuse in the home involving Thomas so his black eye is suspicious due to conflicting explanations and conflicting time frames.' That report listed Thomas and Anthony as 'maltreated'.

Despite the claims, CPS concluded that the case did 'not rise to the level of immediate or impending danger of serious harm'.

The agency did not intervene.

A month later, another complaint was filed against Michael Valva and Pollina. This time the school official alleged that Anthony had been coming to school 'with his backpack soaked in urine'.

'Anthony has been staying in the garage and is not allowed in his room due to him urinating in his bed. As a result of the child being soaked in urine, he has a foul odor and he is extremely cold,' the official said, according to the Daily News.

Three more complaints were filed in March, May and August, but nothing was ever done.

Earlier this month, Thomas' nanny, Amanda Wildman, said she even witnessed the abuse.

Valva had three sons from a previous marriage and Pollina had three daughters and they tried to present themselves as a happy family like The Brady Bunch, Wildman claims.

Valva had three sons from a previous marriage and Pollina had three daughters

Michael Valva's Center Moriches, Long Island, home where Thomas died in January

Wildman worked for the Valva family from 2017 to 2018 and revealed in a Dr. Oz show interview that she saw the boys in the family were subject to intense verbal abuse and brainwashed to hate their biological mom.

'What were you observing in your time with Thomas and the rest of the children that was alarming to you?' Oz asked.

'They were, you know everybody says more the boys than the girls, but they were all verbally abusive. They all got verbally abused,' she said.

She claims Pollina was the big abuser in the home who punished the kids for little things like not finishing their food.

The kids would be told to sit on the couch and remain there, even if they had to use the restroom.

'If they didn't finish their food or they got caught throwing out their food, they got in trouble and they were told to go sit on the couch and they weren't allowed to get up until she said,' Wildman said.

'She told them, "I don't care if you have to go to the bathroom, you're to remain on that couch until said otherwise."'

When asked if she ever saw the kids injured, Wildman said: 'I did.'

'I’d seen the bite mark and now that I look back to the videos and everything that everybody's posting, you see it - You could hear Mike in the car chanting, "We love daddy. We love Angela." Ya know, "We hate mommy."'

Amanda Wildman, who was a nanny for Thomas and his siblings in 2017 to 2018, claimed she saw verbal and physical abuse in the Valva household on Long Island

'They were, you know everybody says more the boys than the girls, but they were all verbally abusive. They all got verbally abused,' Wildman told Dr Oz earlier this month. She claimed on one occasion she saw bite marks on Thomas

'So it's like whatever was beaten into their head was beaten so bad that they were telling me like graphic stories. And I met Justyna. She's a wonderful lady like. It’s so- I wish we could have connected before all of this happened. I wish somehow I knew she was fighting,' she said.

Wildman warned the public not to trust Pollina, who has portrayed her husband as the big abuser in the family, though she is also under investigation for abuse.

'When I was there it was almost the opposite….And you know it's funny because she's trying to portray herself as like this victim of Mike. Meanwhile, she was the runner of it all,' Wildman explained.

'Like anything she said to do, Mike followed in her footsteps,' Wildman added.

Pollina and Valva face second-degree murder charges for the death of their son Thomas, 'because they engaged in conduct which created a grave risk of death to this child,' Suffolk County Police Commissioner Geraldine Hart said.

They forced the child to sleep in the garage in frigid 19-degree weather, investigators said.

Valva called police on the morning of January 17 claiming that his son fell in the driveway while waiting for the school bus, hit his head, and became unconscious.

When cops arrived the boy's body temperature was just 76 degrees. He was was transported to a hospital and declared dead.

Valva and Pollina lived together with their combined six kids. Thomas, a six year old boy, a 10 year old boy, 11-year-old girl twins and an eight-year-old daughter, authorities say.

All five of those kids have been placed in the custody of Child Protective Services.

Hart said investigators believe Thomas and his 10-year-old brother were subjected to severe punishment including 'food deprivation and exposure to extremely frigid temperatures'.

'We are still investigating the extent of the abuse and if it extended to all of the children,' Hart said.