The family has been fighting a hospital in court for months after the parents decided to halt the treatments because they were making the girl sick.
They left their home in rural northeast Ohio just days before a state appeals court appointed a guardian in October to take over medical decisions for the Sarah Hershberger, said attorney Maurice Thompson.
"They don't want Sarah to be taken away," he said.
Doctors at Akron Children's Hospital believe Sarah's leukemia is treatable, but say she will die without chemotherapy. The hospital went to court after the family decided to stop chemotherapy and treat Sarah with natural medicines, such as herbs and vitamins.