My mum just put a child gate on my bedroom door and left me! NOT recommended! (Especially not in a no-CC forum!) I did feel everyone was having a party in my parents' room and I was left out. (BTW, I have an excellent memory and this is from when I was about 3, so I didn't realise that my sister was up all night in pain from her stomach due to solids started very early, I just knew they were up having fun without me! It's my only memory about this... I seriously only have about 10 memories from pre-school and the "missing out" memory is one of them.)

In hindsight, my mother has said she should have let me sleep with them for a couple of nights. I'd have been bored of my sister being awake all night and gone to my bed for a sleep!

Could your DH sleep in your DD's room for a bit to help her settle back in there? He'll probably enjoy the fewer night-time wake-ups from the newborn too.