Invite couple or don’t?

My fiancé’s college friends wife dislikes me and always creating drama and blaming me for it. When she feels there is a problem she is rude and doesn’t let me talk. It’s always over IG message or text message. It’s also always over my opinion or she assumes my post are about her. ( I did that in high school because I was scared to say something to her because she makes everything confrontational.) As an adult I wouldn’t. I told her It wasn’t and she ignored it. Verbally attacked me and brought up irrelevant things. Then blocked me on everything and said she’d never unblock me which I guess was her trying to threaten me. When we would all hang out she never gave eye contact and never talked to me unless I said something to her but she didn’t have that problem with anyone else. I was respectful when she was attacking me even through I wanted to give her a piece of my mind. There is a part of me that wants to bite the bullet and invite them but then I don’t feel comfortable to have her around. I know I can’t invite one because that’s rude but what do you ladies think?