Ada likes Helena to do her hair in the morning. One evening Helena told Ada that it takes too much time and that she didn’t want to do it every day.
Ada knows that Helena likes to make toast in the morning while waiting for the rest of us to get up. So Ada thought about it and made the toast at night, complete with peanut butter, so that she wouldn’t have to spend the time on that in the morning, clearing up some time for Helena to do her hair. Genius!