When you pick out skis, put more emphasis on big mountain performance than park performance. They'll still do fine in park. If you get park skis they won't give you the float you want in pow or the stability you want for landing cliffs. I would consider these skis:
http://www.evo.com/outlet/skis/k2-shreditor-92.aspx
http://www.evo.com/outlet/skis/k2-shreditor-102.aspx
http://www.evo.com/outlet/skis/k2-shreditor-112.aspx
92 if you want a ski with more focus on park and piste while still being capable off-piste. 102 if you want a good balance between park and off-piste. 112 if you want to focus mostly on big mountain.
I would definitely go with the 112s, but that's because I prefer big mountain over everything else.
I am not familiar with women-specific skis so I can't comment on whether or not there are any women-specific skis that would be better for you than the Shreditors.
I ski a lot of off-piste (cliffs and chutes and the like) but no park so my opinion is likely biased in that direction, but I still stand by my suggestions.