I have 3 girls under 3 1/2. The oldest had just started nursery and my second is distraught everytime the oldest leaves. It's only 2 1/2 hours and she calms down by the time we get home, but still spends much of the time asking where her older sister is. She has always been a fabulous sleeper, 7 till 7 and we never hear a peep from her, but since older sis started nursery, she's been waking up in the evening, asking where big sis is, where mummy is, where daddy is, even where the cat is. We reassure her all the time and when I do the nursery drop off, I always tell her where her sister is going and when we will see her again and that she'll have a lovely time. It seems that waking at night and the nursery thing are probably related. Anyone had any experience of this and any ideas as to what else I can do to reassure her? Many thanks!