6month old DD is FF and has a sickness bug, hasn't eaten much today and thrown up her milk at bedtime. I know to keep her hydrated (she's had water a couple of times this evening) and as she sleeps through the night I'm not giving any milk until the morning (it may well come straight back up anyway), but should I wake her to give her more water during the night or leave her to sleep? Her temperature is ok and she is suprisingly chirpy considering she has an upset tummy. Her big brother never got sick as a little baby so this is new to me!