Little Miss Magic (1998)

On a late summer's evening at the Benson household, a mysterious visitor at the door changes their lives. Deirdre is a junior witch in training whose mission is to help the quarreling couple find new happiness. Through the use of magic and a bit of mischief, Deirdre and her new babysitter friend show everyone, including Dad's evil boss, the error of their ways and the path to real happiness.