Thank you for this lengthy and compassionate comment.
Family situations are all so different. So many times I've been glad to have all my siblings nearby, that's one thing I wouldn't change for the world.
Thank you for adding the practical bit about the longterm care insurance. So many times caregivers give it their all and they let their own planning and needs slide. I wish your brother's family and you the best of luck in what I know is a very difficult situation. Thank you for everything you do to help his family, I know they appreciate every minute you give.