I am super close to my best friend, she knows me better than my partner.
She has type 2 bipolar and has always been relatively stable while I've known her. She is medicated and was always aware enough to let me know if she was having a depressive episode and not to expect to hear from her for a few days. We had little memes and gifs that we would frequently send back and forth as code for when she was struggling and neither of us knew what to say.
Late November she changed completely and became aggressive and argumentative. We've been so close for years and I've never ever seen this side to her. She's so wonderful, sweet and kind. She stopped initiating conversation with me and started cancelling plans. She didn't respond when I sent her the usual gifs.
She's deleted all of her social media and a few weeks ago she accused me of turning people against her (we have no close mutual friends) but won't say who. She blocked me at one point on iMessage and then unblocked me to ask if I'd reported her as a negligent parent. I haven't as I've only known her to be a wonderful mother. I tried to ask her if something has happened but she wouldn't answer.
I desperately miss my sweet, kind and remarkable friend but I don't know how to help. People have suggested I just have patience but I'm worried she feels like I've abandoned her when I'm just trying to give her space.