Is it possible to have a relationship with a formerly abusive parent?

My mom was physically and verbally abusive to me for my whole life and only stopped recently after I had a baby and cut her off for a few months. When I tried to talk to her about it she denied everything and said she wishes she abandoned me like my dad did. I’m sure she’ll go back to screaming at me after a few months. I feel obligated to have a relationship with her because she lives nearby and we have a lot of family events where she is there, but it’s exhausting. I have a therapist who made it clear that the relationship is a choice and I don’t have to have it, but if I do, I’ll need to do a lot of inner work to become immune to her outbursts. I don’t know if it’s worth it or plausible to have a healthy relationship with her. Has anyone else dealt with this and made it work? Am I kidding myself?