BS LYD and Arc 9 are feminine looking rackets that she may like. But if she's just a social player and can't tell the difference of a Yonex from a clonex, then may as well just get her any cheap white one from your local sports store.
Yonex Arcsaber 3 FL - even balance and flexible it is cheaper compared to Arcsaber 9 FL (and more user friendly, i believe)
I vote for Arcsaber 7, NR700FX... For rackets which is friendly enough with wallet, you could try to have a look for Apacs Edgesaber 10
In addition to the above mentioned Babolats, ARC9, and BS LYD (which has quite a bit of yellow in it too), the AT900T, ARC9FL, Kason C7, Li-Ning N33, N60, N30 are all either white or pink.
Voltric 60. I found it not so powerfull, but I already saw 2 female players play with it after testing mine because the like it very much.