My dsis has lived in my mortgage free house for seven years with her adult daughter since we moved to a bigger property, in that time i have never asked for a penny in rent as we were pretty comfortable but she has paid all the bills for the house e.g. council tax. I was intending to keep the house incase any of my dc ever wanted to move in. The market rate for rent would be about 650-700 pounds per calendar month.
However we now have 2 dc at university and money is tight so we could really do with the extra cash to help them out. Dsis is not short of money and her and her daughter drive nice cars and go on multiple long haul foreign holidays, so aibu to ask her for a contribution for living there? I feel awkward asking her as she has never offered.