My teen cut ties with my mom

Yesterday, my teen texted my mom that she does not want a relationship with her. I’m relieved for my daughter; my mom is a minefield to deal with, and undiagnosed DID. I am heart broken for my mom though. She was raised my my severely abusive grandparents and is still caring for her dad, who is close to 100. My mom brought this on herself and has caused my other children to avoid her also, and my brother too. I can’t see her because no one wants to be around her, and I can’t be alone with her, even in a public place. She has caused me flashbacks and anxiety attacks. I still feel so sorry for her. I hurt for her. She allowed my grandparents to abuse me throughout my childhood so I have horrible mixed feelings towards her, but can’t imagine having been raised by them. My husband and kids (2 grown, 1 teen) has been telling me for years I should cut off all contact with her. This just feels like a garbage pile. I want nothing to do with her, but I don’t want her to be hurt.