My aunt wants me to reach out to my mom

I haven't spoken to my immediate family in over a decade. They were absolutely horrible to me and abusive towards me. My aunt called me and she ssid I don't owe anyone anything but if I could just go see my mom. My sister is being executed next week. My sister has been on death row for over like 15 years and she's getting executed next week. She said my mom is a wreck and she really needs me. I'm currently pregnant with my 3rd and have my own family. I'm high risk and don't really feel like adding more stress. My mom has never reached out to me. Never apologized. Blamed me for my abuse. But now that her golden child is being executed for MURDERING her step kids I'm supposed to feel sorry for her and go support her?