That's a really tough situation to be in. I think she might just be a little sad that she hasn't really seen a difference of what she's done (which is silly and don't feel guilty about it).

As tough as this sounds, you can really see where your true friends are when it comes to illness. Your friend seems sweet but she doesn't really understand that depression isn't a short term thing. You've done what you can with explaining and apologizing to her but the rest really is on her end. I think the best thing you can do is try to surround yourself with people who can handle it a bit better.

I guess, in some aspects my roommate did a better job. Although I wasn't really open about it but I was taking my medication and she asked what it was for and I just said "drugs" with crazy eyes to laugh it off but I eventually was coerced a bit more and she guessed it. But I don't act any different around her and she only acts different when someone else mentions something that might be triggering for me (joking about suicide and etc). Then again I'm also very careful in not acting depressed around people. I very rarely act sad although on some days I won't leave my room and then she'll knock on the door and check if I'm alright. But other than hiding in my room a lot and having a kind of wacky sleeping schedule sometimes, no one would be able to tell. And honestly that's how I prefer it.

I guess if you really want to mend the relationship you kind of have to tell her that she doesn't need to check on you all the time and all that. I mean, maybe the first step would be trying to invite her to do something outside. Show her that you're still really you. I don't really know how you acted around her before and after she knew about the depression but that's also something to consider. Some people just can't handle stuff like this well :/ my sister doesn't really get it either but I don't see her often so it doesn't affect me too much.

Either way best of luck and keep us updated!