Here is the plot I can remember for a movie I saw on TV as a kid back in the 1980's. A girl grew up in a house and I think her family had lived there a long time. Somehow the house was "alive" and was obsessed with her and would kill/try to kill people that got to close to her. It would slam its black iron gates repeatedly on its own for example.
All I can remember is that there was an older woman dressed in black towards the end who was scolding the girl about how much the house loved her and how she didn't appreciate that love or something along those lines. Then the next time you saw the old lady she was floating dead in the pool.
The ending was the girl standing outside the house screaming at the house for it" to let her go."
I am thinking this movie was made in the 70's or 80's.
Does any of this sound familiar to anyone?