I don't think that's going to work unfortunately. Never been a fan of renting. Besides she'd probably have to pay for a yr and only use it for 6months.
Rather than make her move, could you use the £120K to buy out her siblings' shares of your grandmother's house? Or vary the will so that their shares in the house only go to them on her death?
That would have been my suggestion too,well, more a park home with a good sense of community, but I think he wants a profit at the end of it.Bit of a curve ball but what about a nice caravan on a park somewhere? Cheap as chips for 6 months of the year. No extra bills like council tax. Just to site fee and what ever had and leccy she uses while over here.
not my business but a update would be good.
not saying it in a snotty way. just being nosey haha