I’m really sorry this happened, I think if she wasn’t willing or able to deal with her anger issues that side of her was never going to get better, could even have got worse over time. It is often really hard to break off relationships, even when we know they’re not good for us, so well done for being brave enough to do it.
It’s ok to be upset for a while, it shows you care, even if it understandably hurts right now and doesn’t feel like it will ever get better. You’ve had so much to deal with lately. I hope you’re able to keep safe, those forest fires look really scary.