I'm going to call out my friend for being an awful friend. She hasn't spoken to me in 9 months.
Why are you so angry at her for this?
There's no need to be friends with someone who won't speak to you
I understand that you may have been hurt that she hasn't spoken to you in nearly a year, but have you considered discussing it before confronting her? Perhaps there's a reasonable conclusion you two could discuss before you call her out.
I can't do that. I don't want to be friends with her anymore.
If you cannot talk to her about it, what is the point of it? I think that you should see if there was anything underlying before you decide to just end it.