Silver Spring Township police Officer Joseph Dows says 34-year-old Robyn Foose sustained second- and third-degree burns over half her body in the Friday afternoon fire.
Dows says a caregiver found Foose in the backyard of the Keystone Human Services group home in Mechanicsburg. Police say Foose apparently started the fire while playing alone with a child's magnifying glass.
Authorities say Foose was flown to the burn unit of Lehigh Valley Hospital in Allentown. Her condition was not immediately available.
A spokeswoman for Keystone Human Services says the fire was an accident.