I'm working on a novel. The main character recently (six months ago) lost her arm above the elbow. She's attending a summer camp, and I'm wondering if, with proper planning (and probably a mountain of release forms), it would be possible for her to join in on rappelling? Is there a way to tie the ropes, or some special equipment that would let her control the rope, either with just one hand, or using what's left of her other arm?
She's fourteen, if that matters, and the bluff being used is one the camp's been using for years.
Edit: I've read Rappelling with an injured arm but felt it didn't answer my question for two reasons:
1) My main character, strictly speaking, is no longer injured. She's had time to recover from the car crash and is perfectly healthy, other than the fact that she's missing an arm.
2) More importantly, that scenario seems to be about what to do when you need to get down a rock cliff while injured. This being a planned activity, precautions can be made well ahead of time.