In most bands that have female members, they usually have a female vocalist, bassist, keyboardist and I believe I've seen a female drummer before, but I have never seen a female guitarist before outside of all female bands. Feel free to name any bands that have female guitarists, outside of all female bands.

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Kittie, Lita Ford, Orianthi, Indica

3827605 Those are all-female bands, and Orianthi doesn't really count.

3827978 Just out of pure curiosity. While I have seen girls fulfill every other role in a band, I have never seen a female lead or rhythm guitarist outside of all-girl bands.

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I once saw a jazz band on YouTube with a female guitarist who didn't also sing. Can't remember where though...