Hi,
We had the same debate a year or so ago.
We ended up getting her an Excalibur Vixen II. She loves it and took down a doe last fall. I have tried it and its plenty powerful (285fps) and at 5'3" she is able to crank it with the rope/tool provided in the kit. Probably not the cheapest option, but we are very happy with the purchase.
Here is the thread where I was directed to this model.
http://www.huntingnet.com/forum/cros...bow-women.html
Good luck.