At the end of the rope

So just a brief overveiw, my parents were extremely mentally/emotionally/physically abusive growing up. I lacked almost every real world skill down to properly caring for myself. I suffer anxiety and ptsd from everything. Their abusive actions continued into my adult life before i realized the way i was raised is not normal. And sad to say, my mother was raised the same way. By a drunk abusive father and an emotionally abusive mother. DING DING DING! My mother married her father and became her mother. I cannot recall anymore than maybe a handfull of "happy moments" in all my life with my parents. Once i became pregnant with my daughter my mother tried pushing my fiance out of the picture, told me i was not aloud to breastfeed, that i had no choice but to allow her in the delivery room and the grand finale of hitting me at 9 months pregnant because, SURPRISE, she didnt get her way with planning my so's daiper party because it wasn't what he wanted. So after many, MANY warnings, we cut them out. Even after ckmplications with our birth, my mother didnt even ask if we or the baby were okay, just shamed us for not inviting her and going on about how we hurt her. Then put my daughters health at risk after we asked her to not do something bc of complications.. In the midst of everything, i found out my insurance was dropped because they wanted to drug test my dad, and he walked out because he would fail because he has a drug habit. And he didnt even tell us so we could prepare before the baby. Just "didnt think we would find out". Since then my aunt has tried pushing me to make amends, claiming "i need them" and "they need me". But when the issues are adressed, they lose all interest, disrespect our wishes and my family has even said "its just the way they are. Ignore it!" And i cannot bring myself to raise my daughter thinking that type of relationship is okay. And not just that, i do not want my mother near my daughter. Growing up i was always fatshamed by my mother even when i was too skinny, shed tell me how awful i looked in a two piece, how "embarrassing" and "oversensitive " i was when i would express how those comments made me feel. Eventually i shut down became depressed and she caught me self harming just to say, i was embarrassing to her. Me and my partner have experienced so much disrespect, abuse, jealousy, anger, hatred and manipulation from my parents we do not know what is even real and not real. Theyve kept a fake persona for months and sometimes only weeks but they always return to their old ways. Am i wrong for not wanting to repair our relationship? Ive been so happy and at peace since cutting ties, me and my partner have not argued or been stressed at all. We really just dont know what to say to my family because it sounds horrible, but we've never been more at peace or happy. My parents are so toxic they bring so much bad into our lives. They give me horrible anxiety and ive had panic attacks when they just show up to try cornering us. Just needing some input and support on how to handle this. My main job is to protect my fiance and daughter, my gut says stay away but everyone keeps guilt tripping us over it. Its like we're supposed to just allow my parents all access without accepting responsibility for their actions.