realskiers

Hmmm...hold on there fellow PMTSer.....
I'm a firm believer in soft knees for turns wide or skinny skis...

I feel the knees move into the direction of the turn as a result of the lateral pressure created by the ankle in the boot. My everyday ski is the Kastle MX78 underfoot and I've never have a knee problem with that width. For me using tipping motion with the feet? and good upper body angles gets the job done.
I find when moving to my 98 underfoot and carving with as high edge angle as I can with that board, I feel there is more stress on my body mainly because I'm trying to make a 20 meter turning radius ski turn in 14 meters or less...or anything under the 20 meters. In turns in that 20 meter range and above, it's all about feet and body angles, smooth and sweet...just as if i were on a GS ski. Tip um and let um run...

I just think it's unfair to emphatically state that wider skis are harder on the knees. In fact when skied flat with light tipping angles, I find they are much easier in pow and crud than a narrower ski....less attention required, more stable underfoot.

Fat skis can be twisted, rotated, sideslipped, brushed, drifted just like any skinny skis...yup, I too think fat skis do it easier but you don't have to be? a twister to use good ski technique to achieve high edge angle. At least this is what I've found for me.
Just a thought....have you looked at your daughters knee alignment..sometime s? if they don't track correctly, they get stressed out very quickly.

Just one mans opinion, G