My girlfriends mam helped us out by getting a loan of 10k from the bank for us too. Before we went to sign the contract for the apartment with our solicitor he asked us to get her to write a note saying she gave us the money as a gift and expected nothing in return on it.
We wrote out the following and note and got her to sign it and when we went in the solicitor said it was "fine, perfect" :
02 Nov 2004
To whom it may concern,
I am giving x and y a gift of €10k. I want nothing in return for this, it is strictly a no-strings-attached gift.
Signed
__________