DaisyA, that sounds a good rule of thumb . .

Two questions to Susan Farrer

1) do you want her to be miserable worrying about money?

2) do you trust her?

If the answers are "No" and "Yes" respectively then I'd make sure she's a hefty sum "on call" in a bank in the UK, that you give her a target "per week" living expense figure to aim for but tell her you expect her to be at least 50% over the top for the first few weeks. Then review the situation with her in two months time.

(I'm sort of assuming this girl is coming from overseas to study here . . perhaps that's wrong!)

George