I saw the last third of this movie late night in the late 90’s. I think on scifi channel. It was in
English. In the scene I remember the mother and son in the house. Outside looked normal but the inside of the house morphed into a humid, moss coated jungle of cubby holes. The mother was telling the son something about staying there as her change was coming.(she too was in process of some type of change) He wanted her to leave with him as people outside wanted to harm them.

I really want to figure this out. Please help…