Hi RuthNoah
Welcome to the community. Your question came just a couple of weeks after Liam87’s post on Query on Spouse's Mortgage. Liam87 too was concerned about mortgage and responsibility. I think you will find some helpful information from others on that thread like Colleen, Oldbat, NatR and Razz.
Are there others in your circle of family and friends who support you and your aunt?
It sounds like a lovely story there – the riverside villa and your desire to ensure it happens for her. Would there be any part of that story you could share?
Look forward to continuing the conversation.
Katherine