The Luna is, in my opinion, a better board for her. It is slightly more advanced, but still made with progressing females in mind. A lot of ladies learn on the Luna and it's a board that she'll be able to progress with as well.
The Rome Vinyl is a comparable board to the Luna . Also check out the Ride Compact - a good board that's easy to ride. You may be able to find last year's model on sale for pretty cheap. I've recently heard good things about the Sierra V-Spot as well. The Capita Space Metal Fantasy is a fun board, too.