I try not to let myself get over concerned about it. I mean, I hate it when it happens and it makes the mornings that bit harder - and the washing pile that bit bigger - but Sam has his dry nights and I work on trying to encourage him with those and not get upset with him about the accidents. When he does have one I concentrate more on reminding him that he needs to get clean now. Its why we never buy any of the kids a new mattress until we know they are past it, haha! Its like their 'reward' - I nice new comfortable innerspring.

With some kids, it can go on for a while. DD1 wet hers until she was 9ish. DD2 was more like me though - it happened once and we both hated the feeling of sleeping in a wet bed so much that it never ever happened again. Some of the time I think its just sheer laziness (DH said it was with him). Others its actual 'fear of the dark' issues which we fix with night lights. Some others have involuntairy lack of control. My Sister's little girl who still wets the bed (same age as Sam) has very little bladder control and so my sister is trying to teach her pelvic floor exercises by trying to get her to stop the pee midstream. Could be worth a try if she is outputting that much. Fluids you drink will make it to the bladder at different times so it could be related. One way to tell for sure is - when she says she needs to go to the toilet - do you get ANY warning, or does she go from playing happily to has to go "right now"?