Another bump for the ADM Recon mounts, plus if you plan to stretch her legs past 800yds, get the 20MOA version. As for your budget.. good luck. I tried that at first and have since spent more on glass than I care to admit to. But, in your range I would say a 10x SWFA SS or 10x Bushnell Tactical. Both are great glass for the cost. Good luck and don't forget to show us pics when she is done!