No rabbit pellets.
KMs timothy based pellets or
oxbow cavy cuisine/performance (cuisine is alfalfa based, perfomance timothy based) is the way to go. Unlimited timothy hay supplemented with alfalfa hay until she is 6 months old. Again Oxbow and KMs are the best brands out there.
Check out the stickies located at the top of each forum. In the Diet and Nutrition forum there is one particularly sticky that holds a chart posted by Ly. Look at this.
Pigs need a varied diet of vegetables, yes, but you need to watch how often particular veggies are fed and in what quantities. Therefore you may find it easier to set up a menu that you can follow.
Please consider getting her a friend, cavies are social creatures and do well in groups of 2 or more.
http://www.cavyspirit.com/sociallife.htm
2 sows can live happily in a 2x3 C&C cage which is 7.5sq ft.
She could grow up to be a rex/teddy (fuzzy hair like my Toffee -
http://i210.photobucket.com/albums/b...hegirls006.jpg - she is the cream and white pig in the background) or a texel, which has long curly/wavy hair. Crazy haired pigs are abbys which is what my Rosie is -
http://i210.photobucket.com/albums/b...hegirls015.jpg