Saw a pretty nice Kona Four, in a small frame which would fit my oldest kid. Want a XC ride for rooty trails, not much on major hills (Texas), but some rocks out west in Austin. She's thin and 5' 0" now (about 75lbs) but growing.

I know little of Kona but a neighbor is from WA and has one they are nice bikes and look well designed. I doubt there are issues with that bike but any comments on intended use?