My daughter does not have problems with that but I wanted to make a note to you. When or if your daughter is potty trained enough to not wear a diaper to bed, you may experience bed wetting if her constipation is not under control by then. A friend of mine took her daughter to the pediatrician with chronic bed wetting at I believe age 4 or five. The doc. noted that she was so constipated that when sleeping the constipation puts added pressure to a young bladder that has just gotton used to "holding it". Therefore they wet the bed. This is not the ONLY reason of bedwetting but it contributes. With the constipation she also experienced rashes on her "privates". This was from not being dehydrated enough. Just something to note to you. Perhaps she may be "holding it" too long. Perhaps it is her diet. You never know with kids. I hope you find out the "potty mystery".