A young woman accused of helping her boyfriend hide his slain mom’s body no longer has to secure her freedom with a $50,000 bond — thanks to New York’s new bail-reform law.

Caitlyn O’Rourke’s lawyer argued in Manhattan Supreme Court on Monday that the bond should be released because the charge against her — concealment of a human corpse — is a “non-qualifying offense” under the controversial law that officially went into effect Jan. 1.

Justice Melissa Jackson agreed, saying, “Bail is exonerated and it will be returned to whoever posted it for you.”

Jackson also noted that because “this is her first arrest,” O’Rourke, 22, of Putnam County, wouldn’t be subjected to supervised release under terms of the new law.

The move followed a Dec. 18 ruling by a different judge that released a $100,000 bond posted on behalf of Jennifer Lopez, 19, who’s also accused of assisting Jared Eng after he allegedly slit his mom’s throat in their Tribeca apartment last year.

That decision was also prompted by the bail law, although Lopez was placed on supervised release, court records show.

Eng, 23, allegedly killed mom Paula Chin, 65, during a Jan. 30 fight over his share of his late dad’s estate.

He has denied committing matricide, telling The Post in a jailhouse interview that his mom — who he said had as much as $11 million the bank — gave him whatever money he needed.

Lopez is accused of helping him clean up the crime scene and move the body to Chin’s weekend home in Morristown, New Jersey.

Eng — who met O’Rourke while they both attended college at SUNY New Paltz — told her during a phone conversation that his mom “took a while to die,” court papers allege.

O’Rourke then traveled to New Jersey and allegedly helped Eng and Lopez stuff Chin’s body into a trash can.

O’Rourke, who wore a floral blouse in court on Monday, wouldn’t comment as she left with her parents.

Her mom burst into tears as she and O’Rourke’s dad used their jackets to shield their daughter’s face outside.