My Father died three months ago. Unfortunately he had nothing in place for my Mom who suffers from Dementia prior to his death. There are three of us siblings. We have managed for about 2.5 months to work well together, rotating staying with Mom and making sure she is eating and keeping the home up. We even got Visiting Angels to come in 3 days a week for a 4 hour shift to give each of us a break during our time staying with Mom. What is going on now is my younger sister has been acting irrational and overprotective with my Mom. She has quit speaking with us and only e-mails us when she want to tell us what she wants. How do I stop this aggressive behavior from her without destroying the fragile relationship we have now?