i want to get her a bow with let-off so she has more time to aim...
I'm notone who thinkstaking longer to aim is a good ideaanyway. One of the bad side effectsof high letoff is too many guys taking way too long to aim. Muscles get tired, the sights start wobbling and they keep trying to aim. Nothing good comes of aiming for a long time. IMO, if the shot isn't gone within 10-15 seconds after you hit anchor, you're better off letting down, taking a couple of deep breathsand starting over.
...and because its not as physically demanding since shes a girl.
You are one brave sonuvagun, coming right out in front of God and everybody, saying something like THAT. One of these lady archers around here just might decide you need your ears pinnedbackover that comment. [8D]
After doing some coaching inpeewee league soccer, I can tell you for a fact that most girls that age can whip most boys. Not to mention they learn quicker, because they are more patient and concentrate better. Don't sell your baby short, just because she's a girl. She can handle any physical challenge a seven year old boy can.