There are some really nice cels of her available 
at these stores

Asylum Anime
http://www.storage.asylum-anime.com/cels/x/x2.htm
Anime Chaos
http://www.animechaos.com/x/ac-x1.html
Mandarake Japan

& Animation Master
http://amaster.animanga.com/xcels.htm 
(cool but expensive!)

Good luck!