Topic: Help me remember the title of this Asian horror movie

I remember one scene in particular towards the end, where a woman is standing in the rain outside a meantal asylum (I think) and she starts dancing, like, swinging her arms in circular motion. She is wearing white. The movie also has a scene where the son of said woman comes to visit her at the asylum, but she doesn't speak to him at all while he's there. But when he leaves she watches him from the window and raises her hand to wave at him. That scene is also towards the end of the movie. But what movie is it? I am dying to rewatch it!

Re: Help me remember the title of this Asian horror movie

Possibly "Mother"
http://www.asian-horror-movies.com/moth11.php