Ignore younger sister and do what's best for mom.
My sister lost her husband last year and our mother had a heart attack and nearly died. We all live far away. My sister has offered to move in with our mother but asked that she get the house and land when our mother passes. She will have to quit her job to move and may not be able to find work in our mother’s tiny rural town. I don’t see a problem with this.
Our much younger sister does. She threw a fit about our sister trying to “steal” her inheritance. She is the only one of us who got financial help from our parents when she went to college and our father bailed her idiot husband out of his failing business a decade ago. She also does not want to pay for someone to take care of our mother. She is putting incredible guilt on our mother. My sister refuses to sell her house and quit her job unless she has a guarantee. I am trying to mediate this all three states away. What the hell can I do?