Did your girlfriend end up running? Hope it all worked out, at any rate. Just a note -- if your GF plans to continue working out during the pregnancy, she should probably consider doing so with a heart-rate monitor to make sure her heart rate stays within the "safe" zone for her and the baby. Amazon actually has a very wide selection of HRMs, although if you want to look at and fiddle with them before buying you'd probably need to go to some specialty sports store. Are you in/near NYC? (I'm guessing there's at least a chance you may be since the Staten Island half was yesterday.) If so, Paragon Sports at Union Square has the largest selection in the city.
Somewhere in the world someone is training when you are not. When you race him, he will win.