My mother has dementia, about 3 years now. She lives with my sister in what used to be her house (my sister bought it a few years back for $1). I offered to take her to doctor's appointments, etc., but my sister never has let me. I also asked to attend appointments with them so I have a better understanding of what's going on with my mom, but have been denied.
I have been taking my mom for about 2 weekends a month for the last two years. Over the last few months, she has been worse and worse each time she is at my house. She doesn't sleep, she has bathroom issues, she is agitated and keeps asking to go home. I try to reason and distract her, but she gets angry and sulks. I tell my sister after each visit how she does, but I get told that she doesn't do that at home, or just 'OK'. The last time she stayed over was the worst. Besides being anxious and angry, she charged at me with her fists, tried to headbutt me and threatened to knock me down the steps. I told my sister that my mom can't stay with us for the weekend anymore since she gets so out of control and anxious. I said I would still take her for days (pick up in the am, drop her off after dinner), and continue to help (I've picked her up, stayed with her when she had issues with her home health aid, etc). She told me that doesn't help her and now is no longer speaking to me (blocked me on social media, won't return texts or calls). I still want to see my mom. Can she prevent me from doing that?