Is AUTHOR wrong in the post ? POST : First time posting.

A former friend of mine always did stupid things and never take responsibility for them. E.g. On New Years she was on medication that you shouldn't drink with (she knew this) but continued to get incredibly drunk. She got pissed at my friends and I over her friend leavi g without telling her. Slapped my friend over it and the next day after like nothing happened. One day I was out having a few drinks with friends and she says she wants to talk to me. I sternly tell her 'no I want to drink with my old friends'. She was fine with this and went over to her own friends. Class I don't have to put up with her tonight. She brings her chair over to us and that's with all of us. Didn't mind it but was a bit annoyed by it. I finish my pint and begin to leave when she pulls me to side to talk. She tells me about a problem that she caused but won't take responsibility for it and wants my advice. I told she was in the wrong but she didn't like that answer. I begin to call her out on all the shit she did, mainly everything on New Years (She started a lot of shit that night). She starts raising her voice slightly more and more and leaning in. I tell her everything she did and I leave. She grand my arm to stay but I get her to let go of me and I leave to another pub. I'm in the other pub for 30ish minutes and she comes to my other friends and I. She sits down and tries to defend herself. Says she's going through depression but I say that's no excuse to be an asshole to people and told her to seek therapy for it. She waives it off and I leave to the bar for another pint, Finish my drink and leave her. 
Am I the asshole?