RE: bowtech blacknight
Pup,
The 2004 Black Knight will go down to a 25" draw. If she's looking for a performance singlecam the Extreme VFT and Pat SC both also go down to 25".
That said, with her short draw the 5.75" brace should not be too much of a problem regardless of whether it's the 2003 or the 2004 model.
The 2004 will draw a bit smoother and will be more comfy to shoot due to the new riser & cams.
I do know that BowTech has one young lady amateur shooter who has really been shooting awesome in her 3D class w/ the BK low brace for the past year as well as shooting some great indoor rounds. Pat (BowTech shooter) knows her, unfortunately I cannot remember her name. I'll zip him an email and see if he can post some more info.
The only cons are the harder draw force curves & the low brace if you have a long draw length. If one can handle that, or have a short draw then I see no real cons as a 3D bow. They shoot much better than the brace heights would indicate, IME.