I realize this is probably no longer helpful for her, but to anyone else who comes upon this thread, do NOT take the advice that many of these guys are spouting.

fixnation and republic bikes and all that other hipster crap is junk. crappy components that will brake down in a week. anything made of high ten is a boat anchor and quite frankly, shouldnt even be ridden nowadays (unless you got it for free).

building a bike when you don't have experience is stupid and time consuming for newbies.

if your spending less than $500, buy a mercier kilo tt off bikesdirect, or get something used off craigslist. period. going to you local bike shop is always the best answer to atleast figure out what frame size you need and to figure out what to look for. the shop might even have a bike in stock you will want.