All she has to do is call MS and tell them to transfer her points to your account. I believe all she needs is your name and city but your member # would probably work too (since you know each other).
If they follow the rules (only happens about 50% of the time) they are required to contact the receiving member to confirm that they really want the points before they do the transfer (since it uses up their yearly transfer allocation).
You can call in ahead of the transfer to approve receiving the points