Fridge Brilliance: The entire movie is predicated on Blanche living on the second floor. There is absolutely no reason that Blanche should do that, there's no elevator and she can't get up and down the stairs. In light of the ending, though, it's almost certain that Blanche has set up her living arrangements like this intentionally: To make herself seem more helpless, to make Jane feel that much more guilty, to make her schlep up and down the stairs and wait on her. Whaaaaat a bitch.
Fridge / What Ever Happened to Baby Jane?