We have been dating for a while, more than 3 years at this point, everything is great. We love each other, our family loves each other, we had a place picked put for a wedding, I haven't proposed yet but we had the venue decided. We were literally about to move back home next Monday. Then I come home from work on Saturday, and the room is suspiciously clean, and there's a note on my computer desk. It's very vague, and all it says is that she's unhappy, in our relationship and in life, to not bother looking for her and that she wishes me the best. I freaked out, called her brother and her mom, both hadn't had a clue she felt that way, and had not heard from her. I drove to her dad's house, she had been there earlier that day. No dice, he was just as shocked and wouldn't even read the letter. I spent all of Saturday on the phone with everyone I could think of, nobody knew anything. All anyone can get put of her is that she's safe and not to worry.

Now for the theory, and I know there's more context to be given but with everything going on it feels like I would be wasting your time giving it. My theory is that she's having a very bad manic episode. She suffers from bdp, and has been manic and depressive before but never to this degree. She has not regularly taken her meds in the entire time we have dated. She was acting a bit off the past couple weeks, but I didn't think anything of it, and for her to leave with nothing but a vague note and acting completely fine the day before she left this is all I can think of. I don't know what to do, I don't know what to type, all I can think about is how she's gone out of nowhere and it hurts so bad, so what do I do? I don't want to tell her I think it's mania because she could just pull away harder, but I desperately want her to come home so we can talk about this. What do I do reddit?