Northern Monkey ... who can't upload a bleeding Avatar
I'd imagine we'll end up writing it off. She works in the travel industry so I doubt she's gonna be gainfully employed any time soon.
As for GDPR, we're not asking for proof in the form of bank statements, etc. Just for her to give us her own breakdown, which she's agreed to. Obviously she could tell us anything...
Look, you've made a noble gesture and now you're clearly wanting to wriggle out of it. You're suffering from whatever the giver's equivalent of buyer's remorse is. However, having made the commitment to cut her rent by 70%, you have to stick by it, I'm afraid. Anything else undermines the whole point of having done something nice and, as Pokster says, makes you a bit of a ****.