Bloody things! Keep all the doors shut now so it can't get out where ever it is, if it's tame it will prob come out on it's own when it's quiet! If you can put food in a bowl in each of the rooms you think it might be in this might give you an idea of where it is ( it some point it will cone out and eat) other thing is to just go from room to room checking every where, if you have the time that is! Remember they can climb pretty well so it might not be on floor level! We knew where ours was pritty quickly as it chewed the bedroom curtains!
I expect she will have learnt a valuable lesson for the future even without you being cross at her.
I know you're angry - I'd be fuming too - but done's done now, as my mum always says. Concentrate on getting the rat back. Our hamster once escaped when we were on holiday and lived in a corner of the room if it's any help - the little bugger chewed the carpet to nothing.
Have a and when you are calm and the rat is back have a long chat to your DD about how rules are there for a good reason, not just to make her life annoying - and you expect them followed. Hope you get it back. I'd agree humane traps might be worth investing in if no luck today.
If they are hand-reared they should be very tame, may even come when called? They like people as a rule & will come out eventually. Keep all outside doors shut. I have had rats disappear for a day or two and then turn up again, too bad it had to happen so soon. One of ours was stuck in a kitchen drawer for 36 hrs. Another one turned up in neighbour's garden (luckily he reached for a bucket rather than a shovel)
DC badly injured 2 of our pet rats, sorry to say. You'd think 8-9yo was old enough to have more sense, but sadly not.
We have lost our hamster a couple of times. We have a humane mouse trap and have caught him in that each time. You can get them from Countrywide or other agricultural type stores. It may be worthwhile getting advice online from rodent fora - there are loads.
Don't be too cross with your DD - it is soooo exciting to have new animals and extremely difficult not to touch them.
We have big boy rats but they were once little boy rats and they can squeeze anywhere. Try this www.wikihow.com/Catch-a-Runaway-Hamster Putting food in each room is a good idea so you can concentrate on the room you know he's in. I'm assuming you don't have a cat. And don't be too hard on your DD. Mine is 9 and pretty sensible, but there is no way I'd have trusted her with her rats in her room overnight!
Your poor dd...I know it's her fault but I can't help feeling sorry for her. She was clearly so excited to have them she just couldn't wait! Don't be too cross with her, I bet she feels awful about it. When we were younger we had gerbils and one escaped the day we'd collected them. We had a small cage we used when cleaning them out so left that one open with food inside, and the normal cage, with other gerbil next to it. He was back by the next day so fc for your rat to.