A Maine diner owner under fire for yelling at some customers' young daughter has hit back at her critics--and the mom and dad--who've helped put her restaurant in the national spotlight this week.

Darla Neugebauer on Wednesday again refused to apologize for yelling at the 21-month-old daughter of Tara Carson, a New York City marketing professional who posted about her side of the story in a Washingtonpost.com rebuttal that same day.

'Who knew calling out s****y parenting made you a bully,' Neugebauer posted to her diner's Facebook on Wednesday. 'MY DINER....MY RULES The only thing I am sorry for is that child has to grow up with such terrible parents.'just feel sorry the child has such terrible parents!

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'I just feel sorry the child has such terrible parents!': Darla Neugebauer has refused to apologize for yelling at the toddler in her restaurant. She's pictured here while she works in her diner on Wednesday

Tara Carson, pictured with her daughter at a different restaurant, claims the girl was traumatized after being shouted at by Darla Neugebauer, the owner of Marcy's Diner in Portland, because she wouldn't stop crying

According to the Portland Press Herald, the local health authorities have also inserted themselves into the debate about how Neugebauer handled Carson's noisy baby on Saturday morning.

A post that had reportedly shown up on Facebook in which the diner owner threatened to spit in patrons' food spurred the City of Portland investigation.

City officials, meanwhile, acknowledged that the threats and accusations originated from out of state, and would take them with a grain of salt considering the diner's spotless health inspection record

Carson on Wednesday also spoke out on the incident with Neugebauer.

Carson was yelled at by the owner and claims: 'I'll never forget the look of fear on my baby's face.'

The pair have been locked in a public row since Neugebauer told Carson's two-year-old daughter to 'shut the hell up' after the girl had been crying for '40 minutes'.

Mrs Carson claims her daughter had been waiting a long time for food and was crying for 10 minutes, while Darla claims the child had been crying constantly for 40 minutes

Writing her version of events in The Washington Post, Mrs Carson said: 'Neugebauer could have come over politely and told us our baby was disruptive. She should not have thrown things or yelled or cursed.

'Babies cry and sometimes... as parents, we sometimes rely on the kindness and empathy of strangers.'

Mrs Carson has also criticized the diner owner's 'nasty, profanity-laden' Facebook post in which she referred to the toddler as 'it', 'a beast' and 'a rotten child'.

Earlier in the week, Neugebauer defended her actions after a backlash on social media, with previous customers saying they would never eat at the restaurant again.

In an interview with WSCH (pictured), Neugebauer recalled how she slammed her hands on the counter and said 'this needs to stop - meaning her screaming - and I pointed at her and she looked at me and she stopped'

She wrote on Facebook that the girl's parents ordered their little girl three full-sized pancakes but put the plate out of her reach - causing her to cry.

After 40 minutes of the constant wailing, Neugebauer said she grew tired of it and yelled at the toddler to be quiet.

'I slammed my hands on the counter and I said "this needs to stop" - meaning her screaming - and I pointed at her and she looked at me and she stopped,' Neugebauer said.

'And her parents said, "Are you screaming at a child?"'

Mrs Carson earlier told WSCH, that she was shocked and stunned by Neugebauer's behavior.

'My daughter was crying, it was nothing out of the norm, and about 10 mins later the owner was behind the counter and yelling at my daughter and, like, screaming in her face, "Shut the hell up!"

Neugebauer's restaurant. Marcy's Diner, is on Oak Street in downtown Portland, Maine

The toddler's dad, John Carson, with his daughter in a Facebook picture. He was also at the diner on Saturday

'I think I was just in shock because I've never seen behavior like this before and we're, like, "Are you really yelling at a child right now?" And she's like, "Yes, I am. She needs to shut the hell up and go."

'And again, we were so stunned. I turned to my daughter and I was like, "Listen, this is how we're raising you not to be as an adult. You will never be like this when you get older."

'The waitress looked like she was going to be in tears and was apologizing to us. She couldn't believe the behavior of her boss.

'The look of fear in my daughter's face when this woman was yelling at her... she looked at me like, "Mommy, why is this woman doing this to me?" And I felt helpless as a mom that I couldn't do anything to help her. I can't explain why there is crazy people in this world that behave like that.'

Mrs Carson also wrote a negative review about the meal on the Marcy's Diner Facebook page, saying it was the 'worst experience'.

She said that anyone with young children should understand that crying is normal after 'waiting more than 40 minutes for food'.

War of words: Tara Carson wrote a negative review of Marcy's on Facebook, and the owner quickly hit back

'Who in their right mind would behave like this unless you are deranged?' Carson wrote.

Neugebauer didn't take the criticism kindly and responded to Carson's negative review, writing: 'You are lucky I didn't get really f****** nuts because being physical is not something I cower from.'

Since the story went viral, Neugebauer's business has been getting a mix of reviews online, from those who say they will never patronize her establishment again to others who praised her for standing up for the other customers in her restaurant.

When asked if she regrets yelling at the toddler, Neugebauer said she's not sorry.

'I might have used poor judgement. I wouldn't say I was sorry - because it stopped. When things stop it's usually a good thing,' she said.