DS had his out November last year. Although there were a few rough days it is the best thing we have ever done and DS hasn't looked back since.
* Be prepared for her to be disorientated and in pain in recovery. For me this worse the worse part. Thankfully it didn't last long.
* Keep pain relief up to her regiliously even if she says she doesn't want it. Mainly for the first few days. If you miss a dose it can be really hard to get on top of the pain.
* Plan to have a week a home as they can be quite sleepy as they recover.
* Tell her exactly what is happening in correct terms so she isn't afaird of what is happening. We told DS (3years) that he was staying the night in hospital with mummy. A doctor was going to put a mask on his face make him all sleepy and he will fall asleep. While he is asleep the doctor is going to take out his tonsils and when he wakes up is throat is going to be sore but the nurses will give him medicine to help it feel better. Also tell her that she is going to have a drip in her hand which will be bandaged as that can be quite scary for them. In the morning daddy & DD & DS2 will come and pick us up and take us home.
* We brought him a special toy for being so brave and he took spiderman into hospital with him and spiderman had everything that he had. Spiderman had the mask first and went to sleep and got put on the operating table.
* Practice your brave face so they can see that you aren't scared when they go to sleep.
*As they drift off to sleep they fight the mask, go pale and floppy which is quite scary even though you know what's happening.
*In the morning DD brought him in a spiderman balloon for being so brave.
*Encourage normal food and drink as it's very important to keep food (roughage) to keep passing the surgical site so it doesn't go all sloughie. We weren't allowed to leave hospital unless he ate at least half of what he would eat normally for breakfast.
* Expect that night in hospital to be very disrupted.
* Within 2 weeks DS was back to normal, well better than normal.
* The operation is super quick. I didn't even get through 1/2 cup of tea before it was done.
*Overall DS was really good just a rough few patches where the pain relief wore off.
Seriously best decision we made for him. He is a different kid.

Best of luck and wishing your DD a speedy recovery.

If you have any other questions feel free to ask.