We talked DS5 up to it. Set a date, did the whole running around naked thing, and it worked in less than a day. But he was ready at 18 months, and he was already 2 when WE were ready. Don't threaten her. But don't give in to the diapers either, once you make a decision that it's time.

I know someone who had a son who wasn't trained until he was 5... and he's a senior in high school this year, and he does not still wear diapers. smile