Am I being an ungrateful daughter?

I just got out of an extremely toxic relationship. My ex was very controlling and extremely misogynistic. He treated me badly and I found out my mom had been calling him out on Facebook. I didn't really care until I saw a post my mom made about him and how they were arguing. My mom brought up something that I thought was too much of a low blow. My ex was open about experimenting in highschool and it led to him being taken advantage of my an older male teacher. That teacher is in prison now for what happened because what he did was severely fucked up. In my mom's post she called him the F slur and brought up his SA. I reached out to my mom and told her to take that down and stop fighting with him. Yes he treated me like shit but I will never condone her mocking his SA when he was 17. I stand with ALL victims. I don't care if they aren't even a good person. I then made a post on Facebook saying if you care about me you will stop arguing with him and I don't condone anyone bringing his SA into this because it has nothing to do with anything and it's wrong to do that. My mom called me ungrateful because she's defending me and I'm defending a guy who treated me shitty. I told her if I'm defending anyone it's victims. I'm a victim of rape and if someone told me I deserved what happened to me as a child because of something shitty I did as an adult I would have off'd myself. My mom told me fuck you and blocked me. Was I wrong here?