Separating myself

I live with my toxic mom, just graduated community college , I already have a good remote job, and will be leaving in March with my tax money. I have not let her know or anyone. She has hurt me all of my life and all I do is forgive her. She is not in the best health anymore so I am worried, but after suffering years and praying I feel my own mental health cannot survive much longer. Everytime I say i’ll just stay and suffer, she gets worse. She has made plans with my tax money already but I really want to use it to get far away from here. I feel bad that I stay in my room and pretty much started talking to her less separating myself. I think she feels it. I don’t know much about life because I was taught nothing, just always here, inside. Everytime I wanted to leave my siblings scare me by saying “If something happens because she lives alone it’s going to be your fault”.. but what if something happens to me.. my blood pressure and stress levels were so high. I was so young on meds, finally got off. I’ve tried talking to her over& over but she says “So what if i’m stressed, it’s not gonna kill me. Plenty of people are stressed, I am no better.“ Started better help for therapy until I can afford more, it’s helped a lot. Just venting ..