Ride Compact Snowboard - Women's 2011 | evo outlet
not sure what your budget is, last years compact in a 147.
K2 Moment Rocker Snowboard - Women's - Demo 2011 | evo outlet
they have lots of boards at evo for women. my wife is similar size to your girl just a bit lighter and around the same ability. she is on a 146 forum star for this season. you can find this board fairly cheap as well. its soft and reversed. i expect that she will out grow this board as an allmountain board by the end of the year, so don't get the star if you want an all mountain board for more than a season.