I just found this forum last night and probably have no business offering any advice since I'm very depressed myself, but I will anyway. It seems to me that this friend who knows how depressed you've been doesn't know how to be a friend at this point. If she did, she wouldn't be yelling at you - you don't deserve that. I have a friend who kept saying "cheer up, smile, what can you possibly have anything to be upset about, etc.". I distanced myself from this person. I know she didn't say those things out of lack of caring, it was lack of knowing HOW to care that made her say insensitive things. I think you need to give this friendship some space so that you can heal without this person bringing you even further down than you already are.

Take care.