From the article above:
By the time they got to the hospital later that afternoon, the girl had likely been dead for several hours, according to the charging document.
"Rigor mortis had set in, and her body was stiff, indicating [the girl] had been dead for several hours in the back seat of the car, alongside her older sister and younger brother," the charging document stated.
On the approximately 714-mile drive to Tacoma, her mother passed more than two dozen hospitals, and cell phone records indicated she never called 911, according to the charging document.
When interviewed by police, the mother allegedly said she did not call 911 or stop at another hospital because, per the parent plan she has with the girl's father, she was not allowed to take her out of state. The mother is separated from the child's father, and at the time of the incident, the girl was in her mother's custody and care, police said.