A 12-year-old Texas girl died after her mother and stepfather tried to treat her life-threatening injuries with smoothies and vitamins, police said.

Miranda Sipps, a cheerleader at Jourdanton Jnr High School, was pronounced dead Monday night, Atascosa County Sheriff David Soward said in a Facebook post Tuesday night.

Her mother, Denise Balbaneda, and stepfather, Gerald Gonzales, were arrested Tuesday afternoon at their home in Christine, a small town about 45 miles south of San Antonio.

According to police, Sipps suffered life-threatening injuries on August 8. However, Balbaneda and Gonzales did not take her to a hospital, even though she was “mostly unconscious” at the time.

“Basically, they thought they could nurse her back to health, and we don’t think they wanted the attention that an injury to the little girl would bring,” Soward said at a news conference Wednesday.

The sheriff said Balbaneda, 36, and Gonzales, 40, gave Sipps smoothies and vitamins even though she could only “blink her eyes and move her hands a little” for four days.

The couple finally called 911 on Monday night after Sipps’ heart stopped beating around 8 p.m. local time, authorities said. An ambulance met Balbaneda on the road as they drove toward the hospital.

“Our information is that they did not want police in the house, so she left with the child,” Soward said at the press conference.

Sipps was pronounced dead about two hours later. Authorities are still investigating how she sustained her injuries, but the cause of death has not yet been determined.

Balbaneda and Gonzales were both charged with aggravated assault of a child by omission, a first-degree felony. They were held on $200,000 bail.

Soward said police officers had been called to the house before, but did not elaborate on those calls.