I know two guys who use those portable air compressers that plug into a car cigarette lighter outlet. That's an option to replace a floor pump for someone who, despite the weight training your girlfriend has done, has trouble with the last several psi.
If you were also asking about frame pumps, the inflators are obviously the least-demanding physically, but I can second Michel Gagnon's recommendation of the Topeak Road Morph. I was amazed at how easily and rapidly it worked, much easier than either my Silca or Zefal frames pumps. And it comes with a gauge, a useful feature.