How big should my BP be?

[impressivesmoke]

I got my BP "Sally" from a breeder at a show in September of '01, she was supposed to have hatched on April 4th on the same year. I've had her for more than a year now and she still only weights about 350g. I feed her two mice every five days, sheds normally about every 4 weeks, and otherwise seems healthy. Should she be bigger by now, or am I just worrying too much.