Mother-in-law Issue

I moved out. She only cared about her bf and her “loneliness” but didn’t care that her DIL is staying with her or the room door cannot even close. Plus her guy is 27 and she is 54. I’m 22 so i feel unsafe n caught him staring. Eventually, they fought n now she wants me back and keeps asking for me. Apparently she feels lonely without me (she was lonely when i was there cuz she was single). I’m still not moving back lol. She is abusive to my fiancé so we r just going to get our place and disappear