I KnOw I'm NoT cRaZy!!!?

My brother and i remember this movie from when we were young. all we can remember is it was a kiddie movie with a girl who's grandma was dying or sick and the little girl went through her mirror with these puppet kids to try and steal this fruit from a witch. the fruit kept the witch young and beautiful. towards the end, the little girl is coming back through the mirror and drops the fruit and they disappear. i know we didn't imagine it so please help.