I knew an Elderly Woman who was caring for her husband with Alzheimer's.  She told her grown daughters (who had grandchildren of their own) that she just couldn't do it anymore and threatened to put him in a home.  Her daughter's were appalled and decided that she just needed a break.  They pooled their money and sent her on a fabulous cruise while the youngest and healthiest Daughter cared for the Alzheimer's patient.  When the elderly woman returned refreshed, her daughter, exhausted after walking a mile in her mother's shoes declared that her beloved father did indeed need to be put into a home.

He actually had to be moved out of several facilities because he was too difficult even for trained professionals!