Crazy people invaded a home. The woman was showering, got out, was grabbed and raped, while the man, who was in a wheelchair was forced to watch. It appeared to have a spanish or mexican title.

The film you're describing sounds like "La Casa" (translated as "The House"). It's a Spanish-language horror/thriller film that fits the grim scenario you've outlined. If that's not the title, please provide more details about the movie, and I may be able to help you find the right one.