My ordinarily brilliant sleeper of a DD (3.8) has suddenly started to wake once or twice a night. She calls for me, but doesn't seem to be any apparent reason for it and by the time I put her back in bed she is asleep again. She came through at about 10pm tonight and as I put her back in bed she muttered something about wee but was then asleep. I suddenly wandered if she is waking because her bladder to brain reflex ( or whatever it's called) has started to kick in at night and it's waking her, but not enough yet for her to really be aware and she's still weeing in her pullup. Does that sound possible?