Not knowing how much she's ridden, trails that seem flat and smooth to you can seem like boulder strewn death traps for beginners - it's a long time since you learned how to MTB.She was actually interested in that. She got crushed - lung-wise - on the burst climbs. I think that would be really good for her, despite my (and everyone else's) disdain for them. If we want her to ride, we need to make it accessable for her.
You need to be doing the Carbon loop at Bear Creek State Park or similar, not trying to shuttle Apex.