Bumped into a mutual friend tonight, said hi, she just looked at me like a piece of dirt. No idea how to navigate it.
Mutual friends often pick sides after a break-up even without abuse narratives. If her allegiance were more equal, she'd probably ask for your side of the story? If she were a close friend you could ask, "Is something wrong?", but otherwise all you can do is keep focusing on the people who want to talk to you.