Yes it is possible, but that sounds like a good way to lose $5,000. Get the dates she wants to travel to you and when she needs to go back and then buy an airline ticket in her name. That's much cheaper than $5,000 and can only be used to visit you.

Hi my girlfriend is in the U.S and im Australian is it possible for me to make a money travelers card in her name and put the $5000 on it and send her the card and money statement from when i put the money on it? because im funding for her to come here and its just i have the money we cant use her credit card either :s is it possible to do that?