Originally Posted by
LiqrSicc
I might just try a 29x1.9 tire in the rear. If that works I can just get a newnfork in the front and she'll have her 29er.
That might work. She is a beginner on the technical terrain, so you can't expect too much. She would be struggling on any bike. Be patient.
You say she prefers your bike, think about letting her ride your bike and you ride hers. Your bike maybe too big for her but it's lighter and has tires more suited to the terrain you're trying to get her to enjoy. Maybe a dumb idea.