Thanks Eileen.

I still don't have a clear understanding as to why, but sis-in-law has something against Sloan Kettering. She cancelled the appointment that it took me nearly 8 weeks to get. They have cancelled two appointments there now, and argue with the family when we question their logic. As she is considered his primary care giver being his wife, I don't really have any sort of standing to override her - and sadly, my brother is too weak minded right now to override her himself.