Hi there, I haven't researched night time bedwetting extensively, only a little, but I really don't think you should be too worried about it (or too hard on your daughter). To my understanding bedwetting is a bladder control/maturity issue. So unless you know for sure that your daughter is just being lazy and not getting up to go when it wakes her, or is doing it on purpose, I'd just put her in a pull-up at night until she starts being dry in the morning when she gets up. My daughter is 3 1/2 also and still wets the bed at night, but is fine during the day. We are just putting a pull-up on her until she starts waking up when she needs to go at night. Also, to my understanding it might take quite a while to develop bladder maturity enough to not wet the bed. Sometimes as late as nine or ten years of age (hopefully not, but it is good to be aware that it takes some children longer than others to be able to wake and go to the bathroom at night.)Hope this helps and gives you some encouragement. It would be sad to create trouble/issues with your daughter over something that she probably has no control over.:)