My girlfriend is about the same height/weight and she did the same thing- rent, then want her own stuff. Last season she picked up a forum spinster chilly dog in 143cm and loves it. I just bought her an Omatic Disco in 143cm from WhiskeyMilitia for $100 and she's super stoked on it. She greatly prefers the rocker to to traditional camber burton rental boards she was using. the spinsters rocker and the discos BS tech will really help your gf from catching that edge- and from living in Virginia, I know it sucks way more to go down on ice. However, for better grip in the ice (I feel my trad camber boards grip better than my rockers) check out the Saloman Gypsy in 138cm.