While fairly sure she was finished trying to instruct him for the night, Mabelle wasn't necessarily defeated, although she would have already walked out on anybody else. She could recognize when something wasn't working, and she didn't like to continue repeating the same mistakes and expect different results.
Michel was a difficult person to interact with even in a casual setting, putting up with far more from him than she normally would. Maybe just because he wouldn't allow himself to be ignored. Trying to teach him was at least interesting despite the challenge, but she did actually want him to learn something. So while her plea might have seemed weak or a sign of giving up, at least knowing what was working for him helped her know how to approach the following lessons. Impressed by the perfect beat that Michel was tapping her head with, Mabelle briefly closed her eyes and fought back another yawn. "I'll not interrupt too much, then," she assured him, and it seemed a much easier method of teaching for her as well, because trying to instruct as Dorian had her was much too straining.
"Maybe you should sketch, while I paint. I can lend you my sketchbook, if you need... well, want practice. You need it." Remembering her sketchbook was back at Dorian's, she didn't want to rescind her offer, waiting to see if he was interested first. She wasn't aware of how much time had passed since they began, but she was never good at keeping track anyway. Especially while painting, it seemed to go by much faster than she realized. "What time is it?" she finally asked.