AITA for exposing my friend to her brother? me 29 and my friend 24 (O) have always loved karaoke. O lives far away so hanging out isn’t easy. i’ve been on TT since february, and on sundays we do karaoke together. i invited O to join and she loved it. for 3 weeks everything was fine, then i noticed little things. O wouldn’t join, respond to messages, and at karaoke O was distant. i brushed it off. Apparently she found a streamer (k) she liked, she sent me his streams, chat about him. Etc. One day O joined my stream with a 25 gifter badge. to reach that you need to spend around 2000€, and she hadn’t been on TT for 1.5 months. she isn’t in a place to spend that money at all!. This SHOCKED ME. I am not even neat that level!! I asked O if she was okay. she said she’d be more mindful. But she spend even more and turned 26. she spent all her time with K. changing her username, bio, picture to match his. Suddenly her life was about him. O wouldn’t talk to me or our MF (28) O's best friend. I felt O might be depressed and needed serious help! So i Informed our MF. she was also concerned: distant, on her phone all the time, calling in sick, not hanging out. MF asked about the 26 gifter badge. i said thats above 2000€. MF was shocked. it was likely the Japan trip money. A male MF also informed me that O has been asking to borrow money, 35 here 7 there. He refused. but this was also odd. She doesn't even have 7 euro? 2 days ago K blocked me on TT. It was odd, we barely interacted. i asked O if she knew why. she said idk. i said can u ask? if one of my friends blocked you i would ask why. she said if one of your friends blocked me i wouldn’t care. i got MAD since we’ve been nothing but nice to O. i joined K his stream with a fake account and saw O commenting: "i tell the others i am okay, but i am not okay" "i was at karaoke but i won’t join anymore." it hit me..K blocking me cuts off my way to see her gifting and level. O must have told him to do that. i messaged O asking why this K is more important than Mf, or me. why lie to us about mental health but tell strangers the truth. i was concerned, i knew she was depressed. i called MF, she confirmed. O spent another 300 while we watched K his stream. MF said let’s inform her brother. i agreed, she needed help. brother was shocked! I told him not to fixate on money, but her mental health. He visited O. he said she wouldn’t answer him and acted like an addict. afterwards O sent me a passive aggressive, "thank you for telling my brother" i sent a message saying something else is going on and we are here for her. she ran away to a friend for 2 days. this friend is a bad influence, makes it about herself?? says O learned from her mistakes,(even though she spent another 300 that same day) she is feeding the delusion, calling O an adult even though she ran away and refused responsibility. O sees me as the bad person and herself as a victim.. am i the asshole for exposing my friend to her brother?