Online jail records don't list an attorney for her. Her bond had not been set as of late Friday.
Randolph told investigators that she believed the toddlers could get out of the vehicle. She said that she was folding laundry and watching TV when she realized her kids were gone.
But after being questioned again by investigators, Randolph told them several different versions of the events that transpired on May 26. Both children died of extreme heat exposure, according to authorities.
The Texas mom is now in custody at Park County Jail.
Her two young kids died after she left them in a hot vehicle in May, and now a Texas mother is facing criminal charges.
Sixteen-month-old Cavanaugh Ramirez and two-year-old Juliet Ramirez were found dead in a sedan. The Tarrant County medical examiner's office has not yet ruled on the manner and cause of each child's death. According to NBC Dallas-Fort Worth, temperatures reached 96 degrees that day.
Randolph initially told police that the kids must have entered the vehicle on their own and locked themselves in.
Parker County Sheriff's Capt. Mark Arnett told CNN that according to the mother, the children were playing in a back room of their home when they disappeared.
Friends and family say a pregnant woman fatally shot this week by Seattle police loved to sing and dance and adored her children. The children were unresponsive and Randolph said she broke a window to gain entry.
The children were pronounced dead shortly after 4:30 p.m.
Investigators said she has changed her story multiple times, including once where she broke a auto window to make the incident look like an accident.