The parents of a 12-year-old Texas girl were arrested Tuesday after authorities said they failed to seek immediate medical attention for a life-threatening injury the girl suffered and instead tried to treat her to a smoothie.

Miranda Sipps, a student at Jourdanton Junior High School in Christine, a small town south of San Antonio, was identified as the deceased 12-year-old, Atascosa County Sheriff David Soward said at a news conference Wednesday.

Sipps, who died Monday, had been seriously injured since last Thursday, but her parents did not seek medical care for her, authorities said, withholding further information about Sipps’ injury. Her mother, Denise Balbaneda, 36, and stepfather, Gerald Gonzales, 40, are charged with aggravated assault of a child by omission, a first-degree felony.

Investigators began their investigation when the Atacosa County Sheriff’s Office received a call saying Sipps had stopped breathing. She was still alive when emergency responders arrived and took her to the hospital, where she died shortly thereafter.

Officers investigating the case learned that Sipps suffered fatal injuries on Thursday. They claimed her parents did not seek medical help for days, even though their daughter was “mentally and physically incapacitated and unresponsive,” Soward said.

“She didn’t speak, she could only blink her eyes and move her hands a little,” he added.

It is unclear how Sipps sustained her injuries, although Soward noted, “It had nothing to do with school.”

“We have a story from the mother, but at this time we are not ready to release it,” the sheriff said.

Soward also revealed to reporters that Balbaneda tried to treat her “mostly unconscious” daughter with remedies such as a smoothie with vitamins and, at one point, oxygen.

“Basically, they thought they could nurse her back to health,” he said. “We don’t think they wanted the attention they would attract if the little girl was injured, which is oddly ironic, but that was their mindset.”

The investigation is ongoing; authorities are still waiting for the final autopsy report. It is unclear whether the parents are represented by lawyers.

Following Sipps’ death, a GoFundMe campaign was launched to help with funeral expenses. Organizer Pricilla Chapa wrote on the GoFundMe campaign that Sipps was her niece, saying, “She was taken from us far too soon and in an unexpected way, leaving behind a legacy of love, laughter and memories that we will cherish forever.”

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