K2 has some good stuff like the misdemeaner and other ones that i dont know the names of. Salomon also has some nice ones, i think one is called the Geisha. Basically, K2 and Salomon took a lot of their popular skis and put womanly graphics on them and made them available in small sizes, so check them out.
"the joy that I get from skiing... that's worth dying for"
- CR Johnson
You should date me and get me a pair of skis instead?
Anyway, I haven't a clue on what to get her. Out of the brands mentioned, I bet you could do some proper research on some Surface lady models that would fit the bill. It's awesome that she's already shredding after 4 times.