In the end, Rhode 'rescued' Nell and even though she was displeased, she knew that she shouldn't enrage him. Rhode surely wouldn't let her off easily because no matter what, she caused trouble in his territory and deserved to be punished. But his punishment for her was rather different from what others imagined. He didn't lock her up in the cell. Instead, he gave a command which others couldn't understand—make her in charge of lookout duties on the fortress platform for a week!
This punishment appeared ridiculous to others, but Nell's reactions baffled them. After hearing Rhode's decision, she became as pale as a sheet of paper. Even though she had a healthy-looking and fair skin tone, it looked as though the blood flowing inside her had instantly froze into ice.
She couldn't be blamed because most underground creatures were afraid of a common thing.
Height.