Personally, I would consider why you feel it’s best to not have communication. If it’s coming from a place of revenge (you weren’t there for me so I’m not gonna be there for you) then that’s gonna mess with you and her mentally. I know that when I don’t talk to someone out of anger I tend to fester in it and then I’m obsesssing over not talking to someone but when I cut someone out and it’s just because I know I’m a better person when I’m not around them then I can heal better from the past. Obviously, the thing that is most important is your mental health so if you can frame it in your mind as more of a positive like I think we can both grow and be better people when we don’t communicate as much versus I don’t want to talk to you because you made me suffer. I don’t know if this makes sense but framing it as a positive for both of you I think is the best way to get a good response from her and also to be able to move on from the bad experiences.