Mom says I ruined everything

After I came out, my mom sobbed and told me I had ruined everything she had worked for. She scared me so badly in terms of the stuff she said that I told her I'd change back (as if it were possible) but obviously I didn't, I only pretended to. I dont know if I can bring myself to move out once I graduate or turn 18. I feel like my mother really wants to keep me with her to make sure I dont "screw up" again but I can't live here AND transition. Everyone tells me to forget about her but she's my mom.