Dealing with the pain from LO tell me to get out.

My mom and I have always been very close we've either lived together or next door to each for most of my life. She has been my rock and me hers my entire life. She got really sick with covid then rehab, then sick again with stomach issues in hospital for almost 3 weeks then back to rehab took much longer to get her physical strength back before she could come home (I was going 6 days a week to spend time and to work with her to help build her strength and support and just to be with her) but when she was physically able her mind already started going downhill and downhill fast ended up having to move her to memory care. She's lost over 100 pounds refuses all meds, refuses showers (or even getting washed up) about 8 months ago she started to not recognize me and say I wasn't her daughter. I kept going and if she told me to get out or leave I'd just say ok, love you I'll be back later. For my own sanity I dropped down to 3 days a week. About a few months ago she started letting me sit with her and every now and then I'd get a hug, kiss, and love you, which only lasted a few weeks. She is now back to telling me to leave and saying I don't want you here, once she started throwing everything she could get her hands on at me. I know it's the disease but that does not stop the pain. It hurts me so much that I have panic attacks and my chest hurts (yes i take medication to help me). The pain I feel and thinking about the pain she may feel (2 of her children have never visited and the other 2 will go months without going to see her and we all live within 20 minutes of her) I know the love she has for all her children and how proud she is of all of us and I know that she misses her children/grandchildren/great grandchildren very much and I can't do anything to help her because the person she is now doesn't want me there. I keep going because I don't want to miss a good day. The girls (nurses and CNA'S) are wonderful with her (I have cameras in her room) and have seen me cry so many times, they know and can see how much I love and care for her and always give me words of encouragement. I have a very supportive husband and daughter (which also go to see her) who also love mom so much. I just started in-person support group and have been online support groups. Have read and researched everything i can about dementia. But I can't get the pain to stop. How do I get her to see me, her little girl, we used go/do things together ALL the time.