The investigation of 26-year-old Andrea Forsythe began when her rental home burned down in June. She faces separate federal charges of setting that fire and filing false insurance claims to collect on jewelry she said was lost in the blaze.
Federal agents say the jewelry linked to the fire was stolen from another couple for whom Forsythe worked as a nanny. It was during that investigation that authorities say they discovered the theft from Kunitz's home in 2013.
Collier Township police say Forsythe confessed stealing the earrings.
Forsythe waived her preliminary hearing Monday and declined to comment.