Like I said, it's a long story that I won't get into here. But we didn't really grow up with her much (she's the oldest and lived with her mother), and we obviously know her, but not much more than if we saw her at a family reunion. I've never felt "sibling close" to her, except for the simple knowledge that we are siblings.
But all of the siblings have stepped up to do what we can. We will see what happens. But I think we've all worked together to get doctor appointments and Medicaid appointments set up for her. My brother in LV is taking care of her needs and expenses. This has kind of come out of nowhere, as such things do.
Thank you for the kind words.