I can't blame gramps for asking a favor from Soke to be nice because Aunt Suey has a mental illness. I know they're rich but I think he's trying to spend all the times with his family, to make up his lack of love with them from the past so there's no need for a nurse. Don't forget, she's a daddy's girl so bringing a nurse, will make her go crazy even more. Beside I think Soke should know how bad condition Suey is in, Aunt Pen and cousin Oo are at fault mostly.