So, as we all know, I don't often venture out of the Spam Zone, but this post seemed a bit too serious for there, and I do need some genuine advice so. I have a friend. I'm not going to name names, even though she'll likely never see this, but I have been friends with this person for years and years at this point. We became friends around 8th-9th grade, and we were super close for the majority of high school and our early college years, and I was happy to call her my best friend for a long time. Recently, as in the last 2-3 years or so, we've started to grow apart, and that's fine. I realize that the friends we make when we're young don't always last forever, but we were still friends, even if not as close as we once were. I always was confident that, at the very least, she'd be around and there for me if I needed her, and vice versa if she ever needed me. However, within the last year, she's changed dramatically. She's had some ongoing heath problems, and her attitude has gotten steadily worse, to the point that I might say she's transformed into a toxic friend. And, as I type this, I'm starting to wonder if she's always been toxic, and I just couldn't see it before. Since the beginning of this year, our relationship has taken a complete nosedive. I've been doing my best to try and fix it, but she's just not receptive at all to anything I say or do. This week, it's kind of come to a head, in an indirect sort of way. Facebook drama, mostly, but the end result is that this morning I discovered that she had unfriended me; a few months ago, by the looks of it, but I just didn't notice until today, because neither of us have ever been big Facebook people and I tend to not notice stuff like that. Now, I'm at a loss as to what to do. I know the majority of the answers you're all thinking of are that I should drop her as a friend entirely, but unfortunately it's not that simple. We have a lot of shared friends, and ignoring her is impossible, because we tend to inhabit the same space when we're out with friends. If I just suddenly stopped caring, I'm worried it'd cause a rift in our friend group, because people might feel forced to take a side. Not to mention, I'm extremely worried about her health, and what in the hell has spurred on this kinda sudden-ish change. I feel like absolute crap, worrying about all this, and it cannot go on like this, if only for my own mental health (which, as some of you might know, is not exactly top notch in the first place). Help me out, KHV?