Am I overreacting?

Okay so few months ago I caught my fiancé (at the time we weren’t engaged yet) talking to another woman. I vented to my then friend about it. Well we have been going through couples counseling and doing better than we have in years. Well my friend who I vented to keeps being very negative towards him even though he has proven how much he regrets what he did and has done everything to earn my trust back. I had a stroke that led to a brain bleed that I had to have surgery to stop the bleed. My fiancé was there for me through the whole thing by my bedside while I was on life support because I coded 3 times on the table. She’s still treating him like shit. I posted about my engagement yesterday and she called me a idiot and said He’s going to do it again now because I let him back then she blocked me. I trust my fiancé again he earned it back. However one of my friends asked if she ever apologized if I would forgive her and I told her no because of how she treated him and kept treating me also like I had no brain. Am I overreacting to what she did?