I can't help you much more than OHarcher. But, when my wife was shooting I had her set up with Carbon Express 100s cut to 25 inches with a 75 grains point and 3, 2 7/8 inch plastic vanes. Total arrow weight was around 250 or 260 if I remember correctly so it might be a tad less with the shorter arrow length that your wife would use.

My wife had a 25 inch draw length and shot at around 30-33 lbs. When I chronoed her setup she was getting around 195-200 fps with the higher draw weight out of a Hoyt Havoc Intruder (which is by no means a fast setup).

Hope this helps some.