Originally Posted by
Often1
Presuming that you are meeting her or will be available around the time of her US arrival, it is good for her to have your full name and mobile number on a card. If CBP has any questions, they may call you to verify rather than having to poke around trying to find you.
+1. I had a friend come to visit me and he spent a long time in secondary trying to remember what I did and where I might live.