Sabrina, the Animated Series
Has Anybody Seen My Quigley?
S1 E12:
Uncle Quigley, sick of being unappreciated runs away from home and leaves the family with a really mean nanny. The Spellman girls despise the militant nanny and turn her into a free lovin' hippie. Now the nanny doesn't take care of them at all. The girls realize how much they miss Quigley and are desperate to get him back.