Daughter levels with mother about her future plans

DEAR ABBY: I am 67, and my husband is 68. For the past six years, we have been caring for aging parents. My father-in-law, who had Alzheimer’s, passed away a few years ago. We went through a lot with him as his illness progressed. My mother-in-law is 87 and does not want to go into a nursing home. She still lives by herself, but my sister-in-law and I take turns cooking and bringing her food, and my husband works his tail off cutting the grass and doing maintenance and repairs she can no longer do. Although we are retired, our lives revolve around her needs.