My 98 yr old dad has caregiver twice a week. Paid for by the wonderful VA. His 97 year old companion is usually calm. But lately has become belligerent with the caregiver: ordering her around and fighting about the way she does her work. Caregiver is there for my dad only. Have lost several due to this behavior. Suggestions? Dad has moderate Alzheimer's. His companion has never been diagnosed. Her 74 yr old son moved in a year ago for his mom. He is wonderful, but seems oblivious to this struggle.