Dr. Boogie has it exactly right, get her the Fushigi Yugi Ultimate Collection. Even the girls I have dated that don't like anime like Fushigi Yugi.
This is a tad pricy (much less so than it was about 4 years ago, but it is the complete collection)
http://store.animearigato.com/f00123.html
You might be able to do better on eBay, I got mine there way back when for about $40 plus shipping