"The fourth in the feelgood family series sees 'good witch' Cassie facing a spell of trouble with the arrival of a troublesome, long-lost relative. Outwardly sweet but secretly sour, cousin Abby uses her own supernatural gifts to turn Cassie's family and the local community against her. So much for happy families!"
(Above taken from here).
It was just as enjoyable as the other two that I've seen from the series. In short, if you haven't seen this series of movies, you really should!