Tl;dr: can anyone give me advice on how to cope with sitting in long-term disharmonious vibes that I can't do anything to change?

I HATE the feeling of sitting in disharmonious vibes. You know when someone isn't necessarily being outwardly aggressive towards you but you can feel their internal hostility/anger emanating from them? It puts me so on edge, and I gather this is a pretty infj thing to need harmony to thrive.

Anyway, I work with someone who despises me and there's nothing I can do to change it (she is dating a narcissistic ex of mine who's done a great job of painting me as a real piece of shit, and she needs to believe it because her view of him/herself/her relationship hinges on it). I've processed most of the abuse/loss of her friendship/general awfulness of the situation, but I'm still left having to be around this person who keeps me sitting in her hostile energy cloud and it is grinding. me. down. I may report her but I don't think it would get far because her actual behaviours are so subtle (not looking at me in group conversations, pretending she can't hear me sometimes etc.) but I can feel the hatred just radiating off her, and I have to be careful what I say to/near her because she's made spurious complaints about me in the past.

I would like to not take on others' vibes so much but it's so fundamental to me I honestly don't know if I can change it. It's really making life very hard and has that extra hurt that it's like this because of things she believes about me that aren't even true, and is a way that I'm still being abused even though the relationship is over. So I'm really quite desperate for even a bit of relief.

I'm not interested in leaving the job, I'd like to try and cope with it at this point. And trust me when I say addressing it head on will not work.

Has anyone gained any traction on tolerating disharmony? Or been in similar situations and found any ways to cope with it better at all?