Although a little stalkerish, the two decided that Arthur should observe Nyx and her training. It was obvious why they did not ask for her direct help. Not even Arthur would guide the person who wanted to take his legacy, but he had no idea where to start other than to observe her.
Nyx was more hardworking than he thought. Arthur had to wake up early to ensure he didn't miss her, and even then, he barely managed to catch up to the woman who woke up at five. His grandfather was still snoring in his room when Arthur had to leave.
Arthur was blind, but he could still follow her without being caught. Nyx had a unique presence; she felt like a calm river and an erupting volcano at the same time. It wasn't hard to follow her while keeping a distance. The first thing she did was clean the entire clan. It came as a surprise, since she was the supposed genius. But for three hours after she woke up, she cleaned the clan.