During the day with Lindsay, I would put either a towel under him or get him to sleep on his car mat, which is made of linoleum. There were only ever a few times that he wet that during a sleep. With the girls, they would go to the toilet before their sleep and go again when they woke up and that worked well for us and I don't think either of them had an accident.

Give her a go at sleeping without a nappy on but make a point of getting her to at least try to go to the toilet before sleep, to get her in the habit of doing it.