Help!

So I was in a committed relationship with my ex for over 3 years. We got engaged after knowing each other for a year and seriously dating for 6months. I always felt as if her mom hated me. She would make prejudice jokes (I’m black and she’s white), ask about my hair and just say other negative stereotypes. I was always nice and respectful to her but she never was for me. Our first meeting, she declined any interaction with me because she said she was too busy which should have been all I needed to know to stay away from her. Fast forward to 2020, when all of the protesters and riots started that she decided to classify me with the other black people who were protesting (I never went to a protest or a riot!). My fiancé would NEVER take up for me and I was put in a very awkward place to where I didn’t feel safe and I let her know that on several occasions. I didn’t want to come between their relationship so I started backing off and not saying anything to her mom at all, no conversation no communication of any sort. We ended up breaking up because we could never figure out a way amongst ourselves to actively communicate to each other or her to her mom about how I was feeling and that we were both in bad places mentally. We basically drifted apart during quarantine and it hurts me because I do still love my ex. I’ve been trying to reach out to her as much as I can and have been trying to communicate feelings more to her and be open but she’s just closed off and doesn’t want to talk about it. I do want to be with her but not if she won’t talk to her mom about what’s going on. What should I do?