Thanks so much, all!
Que sera, sera, yes this is what I am hoping to do: focus on the time we spend together, rather than trying to talk things out - which may result in a lot of drama. However, it is not all within my control.. But let's see

MsSweatyPalms, thanks for your words, too. It's good to see you were able to adjust your attitude, even though I can imagine it was not necessarily pleasant to lose your sister's support.
ThishaBuv, my fear is related to old wounds in the family: my mother had narcissistic rages, my father always defended her, leaving me feeling abandoned/crazy. So I feel like I always had to swallow my needs and emotions to all of my family. My mother because she was blind to my needs, my father because he always told me to respect my mother, my sister because I was the oldest and should behave responsibly. As a result, I have long had little contact with my family as I felt I couldn't be myself, and luckily I have learned to seek for help and support elsewhere.
I do sense we are all trying to make this work in a way, things have evolved since we've grown up...