Something really attractive to carry her stuff....check out Po Campo bags and the Linus Sac. A nice riding windbreaker and really cute helmet (not exactly on the bike). Helmets:
Yakkay, Bern, Nutcase. You can always put a colored chain and colored tires on it for bling but aside from grips and saddle, there's not much "cute" - the rest is all mechanical. Does she care
about that?