She won't let my brother (primary caregiver) care for her. This usually begins in the evening and goes on through the night. The next morning she has no recollection of these events and is more cooperative. We feel a sitter for the evening hours would be a great help to my brother and that he can then handle the daytime care. My mother is adamant that she does not need a "babysitter" and will most likely be agitated by a sitter. Will she likely respond better to an outside person even though she complains and argues about it to us?