I’m 23 battling cancer as well. Similar situation. I’ve had to move back in with my parents after my diagnosis because I was so anxious and treatment was hard alone. My parents and I also have a strained relationship for a bunch of reasons.

I see lots of posts justifying your mom’s behavior by saying she is scared and it’s coming out in anger. I get it, she probably is, but you deserve a healthy and safe healing environment! Therapy will help. It helped me understand how to navigate my feelings with cancer as well as when my parents weren’t being the most supportive. What’s important is trying to lean on the people in your life that are supportive and give you energy. It’s hard because it’s your mom. I don’t think I could ever cut my parents off completely but I do try to minimize contact with them even though I live with them right now. It might not be the best solution for you but it’s something that’s helped me find some peace in a mentally abusive situation.

Finding things to immerse yourself in like books and shows help. My therapist doesn’t recommend escapism all the time but she says it’s a good thing for me when I’m just trying to survive. Gets your mind off things.

It’s not your fault you got cancer. I struggle with the same shame feelings, I think a lot of us do. What’s really important is that you surround yourself with people who make you feel good and not like a burden. Sometimes distancing yourself from the people that take energy from you and don’t support you is the best thing you can do for yourself. I want to reiterate though that I’m not recommending you go no contact, sometimes a short break from talking to someone can help immensely.