Exhaustion, I did think of. But I totally forgot to account for natural predators--thank you for reminding me. In canon, she's the type of girl who always walks right into that kind of trap; perhaps Ensof could grab her and pull her out of the way in the event that she crosses paths with dangerous animals? (On his own, I do not think Ensof is capable of fighting them off, so it would mostly be a lot of running.) Maybe add an additional half an hour time to the previous schedule to account for running away from predators, and the injuries that would arise naturally in the process? (Like additional scratches, a twisted ankle, a broken ego.)