Help! My Mom Thinks That I Am Going To Hell Because I'm Gay! What To Do?

First off I am 24/male, out for 4 years, and have a partner, and live by myself. My mother 50's, holly-roller, married to a cheating drunk, lives by herself, and jobless. My mother has always supported me in being gay, untill recentally. She called me stating "What is your relationship with god"? Later on in the convo to find out that she is woried that I am going to burn in hell for being gay, she believing its a choice, and even discovering that it is not me she is even worried about, but herself. She believes that she will burn in hell for supporting me! Then, to only add to my dismay, telling me that my partner and I are always welcomed in her home!? If her mission in calling me was to sabatoge our mother son relationship and/or give me a complex, then by all means she succeded! My question is this: Is it wrong of me to tell her that I want nothing to do with her until she seeks group help (PFLAG), and then apologizes to me? I know everyone has their opinion, but this really hurt.