A baby girl who drowned in a bathtub is being remembered as a ‘sweet angel’ as her foster mother now faces a neglect charge after police say she confessed to leaving the baby alone in the water for 30 days minutes.

Hailynn Volpatti, 25, was arrested after investigators discovered she allegedly left her 21-month-old adopted daughter, Nova Lei Bryant, “unsupervised for more than 30 minutes while she was on the phone in -an upstairs bedroom, talking to a friend” and then lied to police about the May 21 incident, according to a probable cause affidavit obtained by PEOPLE.

grandmother of Nova Carri L. Nauman he wrote in a GoFundMe post that the girl died on June 26. According to the probable cause statement, the child died several weeks after the bathtub incident, which occurred at the suspect’s home in Brazil, Ind.

Volpatti called 911 after she returned to the family’s bathroom and discovered her adopted daughter “floating in the bath water on her back with only a small part of her nose above the water,” the affidavit states.

An officer who responded to the scene performed CPR and was able to find a “weak pulse,” according to the affidavit. Later, the policeman rushed the girl to the hospital.

Volpatti initially told police she left Nova in the bathtub with the girl’s 4-year-old twin brothers — Volpatti’s biological children — for a few minutes while she went to get a drink in another room , according to the affidavit.

But two days later, after police requested a meeting with a friend of Volpatti’s, the adoptive mother came to the Brazil Police Department and allegedly admitted she lied, telling investigators she had a phone conversation instead extended with a friend upstairs while the three young children were left alone in the bathtub, according to the affidavit.

On the GoFundMe page, Nauman, Nova’s grandmother, wrote: “My precious angel will not be forgotten.”

The Clay County Prosecutor’s Office declined to comment on the case when contacted by PEOPLE.

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Celena Conkright, Nova’s birth mother said WRTV that her daughter was born with complications requiring a feeding tube and that the Indiana Department of Child Services removed the child from her custody after two months because Conkright says she has ADHD and the department claimed she was “not capable of take care of” Nova .

“They said I wasn’t learning fast enough,” the toddler’s biological mother told the media.

“I’m upset, sad,” Conkright said. “I think it’s crazy.”

People reached out to Indiana DCS for comment but did not immediately hear back Tuesday morning. An Indiana DCS spokesperson told WRTV that his office “investigated” the incident and is “taking action” by revoking Volpatti’s foster care license.

If you suspect child abuse, call the Childhelp National Child Abuse Hotline at 1-800-4-A-Child or 1-800-422-4453 or go to www.childhelp.org. All calls are free and confidential. The hotline is available 24/7 in over 170 languages.