It was a rather weird experience for her after a few years of pavement to accept that it's normal for the rear end and front end to slide around and not have 100% traction all the time.
If she likes the 105XCs "style of riding" I may look for a KX100 + seat/risers. That should be pretty good.
Baby steps... I just hope each step wont be too expensive
A KDX with a Kouba link and shaved seat should allow her to easily put both feet down, and both are reversible. The KDX is a bit piggy but not as bad as the 230s IIRC.