My daughter is still in pullups at night, but probably doesn't need to be, as she hasn't had an accident at night for weeks-since we started several months ago, she was almost always dry unless we let her sleep in or had liquids too late. Now, even if she does sleep in she is fine, and it seems to coincide with a daytime mentality wherein she hasn't been having any trouble at day care (which had been until recently the only time we were having trouble). In any event prior to that, it seemed as though she knew she was wearing a pull up so if we didn't get her up on schedule, she didn't worry about it. It may just be an issue of taking that crutch away - although the accidents at nap time may indicate that she's not ready, but it could also be that she's not going before she lays down?? I would mention in addition to the other suggestions, that you make sure if she gets up at night (i.e. b/c she's sick or has a nightmare etc) that you make her pee then also. I know for me, I can't get up in the middle of the night for anything without hitting the bathroom first. She's old enough to know the consequences, so you might just leave it up to her whether to choose panties or a pullup for night time. In any event, you have to do what feels best...just don't put her in panties, figuring she'll ultimately she decide she doesn't like waking up in her own pee with no endpoint...I would say if you try it, don't give it more than 3 nights or so. It is horribly distressing to the child and a whole lot of work for you!