There is a movie I used to constantly watch as a child and I can't remember the name or find ANYTHING about it. I don't think it was a very popular movie but it has a young boy who moves into a castle with his family, and he meets a young girl ghost. They become friends, but the girls ghost family is evil and wants the boys family out of their old house. I can remember two scenes, one they boy and the ghost girl go roller skating in the castle, and second the boy find a hidden cave type place and he sneaks in to find the ghost girl taking to her evil mother... it sounds so random but I'm hoping SOMEONE knows what movie I mean!

Little Ghost (1997)?

YES! That was it! Thank you so much! :)