Security video shows the young suspect approaching the victim's house on the 200 Block of West Tulpehocken Street at 1:00 p.m. Wednesday.
The 27-year-old homeowner returned to find the girl in her bedroom.
Detectives say the suspect ran away with stolen jewelry and clothing.
She was wearing a yellow shirt and black sneakers with pink laces.
Anyone with information is asked to contact Philadelphia Police at 215-686-TIPS (8477), text a tip to PPD TIP (773847) or through PhillyPolice.com.