There are several GREAT shops in the area... What kind of riding is she thinking about?
Performance Bike in Plano/Dallas has some great bargains and they have OK technicians in their shops. If she's going to mountain bike, they actually have some pretty nice options on the floor. Women's road bikes are pretty hit or miss - and I'm pretty sure she'll need a women-oriented frame (legs longer than torso). They're all Fuji (nothing wrong with that), but size selection is limited. I ride a Fuji. Bought it because it rode better than the other bikes I was looking at. Didn't hurt that it was also $800 cheaper for the same component group...
BikeMart in Richardson has everything. In quantity. If you've never been, go. But don't expect personal service if you walk in between now and Christmas. It's a madhouse. If you've just inherited some $$$ they have some SUPERB deals on 2008 Colnagos and Cerevlo SLC-SLs... But be prepared to turn in your team CB card if Sam let you keep it when you bought a British car...