The new Diamond Razor Edge might just be the ticket.........it's available in peak weights from 30 on up to 60# (limb swap is available if she gets strong and outgrows a certain weight)
It also has draw length adjustment built right into the cam from 19-29"!!
It has a very slender grip area, is only 31" and light in mass weight..........plus it still boasts an IBO speed of 309fps for the highest 29"/60# spec model.
So it's no joke, it's a high performance entry level type bow that would do pretty much anything she'd want.

And by the way, what the heck is "74#ofkentic" exactly?? LOL