You will find that this will range depending on your location. I know photographers in the midwest who charge around 100-200. East coast like NYC some are 1000+ and same for the west coast. I think the average though is around $350-$450 but what you can get will vary greatly!
I love her work and don't think you'll be disappointed. I was actually going to email her and see if she wanted to grab coffee when I make it to Cali in July! Have fun, I adore her work!