My mum kindly wants to gift us £50K which we will use towards our deposit. I’m aware of potential tax we would have to pay in future but my concern is about the fact it’s from money she inherited 15 years ago from her mum’s estate. This was in a different European country. Is she going to have to prove where she got the money from? I don’t want to add stress for her and don’t think she has kept any paperwork. Has anyone experienced this?