I live in a granny annexe, my daughter, her husband and son live in the main house. I am needed constantly to babysit, school runs and also overnight as they go away with their jobs. My 2 sons both have children and live approx an hour drive away so it's not possible to be as hands on with them. They also have no MIL support close by so I often juggle things this end to go and help them both out. I am very sensitive to everyone's feelings, even the other grandchildren " why can't we live with you Nanny like -- does" ? I chat to both sons and their wives about the situation, and I babysit for them as often as they need me. I would hate for any of them to feel any less loved or cared for, so everything is discussed and in the open. I would encourage calm openness here, so that the MIL is fully aware of the hurt she is causing.
Passports not in the drawer I always keep them in. Turning the place upside down.