My sister and I are caregivers for our 91yr. old mom. My sister is becoming ill from the stress. My mom lives downstairs of my sister and husband. My sister can't go upstairs even if she's been downstairs all day , without Mom saying "Don't forget about me, it's so lonely down here". When I come over to visit several times a week, as I am leaving for home, she gives me the same "lonely" speech. She refuses to go to any senior center and be with those of her age. We know she doesn't want to burden us. How do we talk to her and help her to see what she is doing to us, especially my sister?