        She thought for a moment.  He clearly wanted to know when she was coming again, and this was a far more convenient method than writing in the beach.  The Princess had given her a lot of latitude in making decisions: if they spent too much time apart, they would start to forget lessons they had learned, but if they pushed too hard, they’d make mistakes.  She knew that everypony involved would want to go over everything she’d already learned.  She hardly could be expected to stay up all night and answer questions, and then come back here again.  So, one day off, then back again?