I fractured my scaphoid waist in April. I also had some ligament damage as well. My cast was removed a couple weeks ago and I am in a brace for another 4 weeks (not sure what part of your wrist your daughter broke????).
I am 38 years old and and I consider myself to have a fairly high pain tolerance..... and there were moment when I was REALLY overwhelmed to the point of wanting to just sit down and cry my wrist hurt so bad and I was SOOOOO frustrated by all the things I couldn't do. Oh, and the itching of the cast - nightmare!!!!!!!
I will say that at first the pain was a throbbing pain, which lasted at least a couple weeks. There were moments when I would have a reflex and move my wrist inside the cast and it felt like someone had stabbed me with a knife.
Then it does settle into a dull ache for a couple weeks. It felt really better about a week before I got my cast off, but then I had had some dull-y ache-y type stuff as my hand had more freedom to move around inside the brace. Pretty much at this point that is gone and I would like to rip off the brace and throw it to the moon!!!!!
A couple suggestions:
*As the swelling goes down and as your daughter moves her hand around in the cast the padding will get smashed down, so once she has a good deal of ability to move (ie if you can get a couple fingers down inside the cast) you should go back and have them replace the cast (I never got a waterproof one cuz of my insurance, but if you can get them to do waterproof I definitely would).
*The more she sweats the more it itches and the padding will start to smell. I used (just a bit, cuz if you get it too wet it will be icky) a couple light sprays of febreeze.
*My ortho said if it itched to use a blow dryer for a couple seconds right on the spot, but I found sticking my hand in the freezer gave me more relief. I also have one of those bean things that you can put in the microwave or freezer and then you are supposed to use it on your neck (way 80's.... if you remember them!!!!) But I would put it in the freezer and then wrap it around the cast..... HEAVEN!
*I probably should have gotten a sling because I used my hand WAY more than I should have and the sling will at least make it more difficult so it would cut back on the involuntary usage - stuff she does just cuz she's used to it (like blowing your nose.... I use 2 hands for this, but if the cast includes her thumb she can't really do that without poking herself in the eye :-)!!!!).
*Sleeping was really uncomfortable at first - my hand kept falling asleep so then I would wake up. I finally found that if I slept on my back with my arm curved above my head it was the most comfortable position.
Not sure if she is wearing a bra (my 9 year old does) but fastening my bra still hurts a bit. I would suggest some sports bras where you don't have to bend your wrist around the back in order to fasten!
*I rubbed olive oil into my hand and arm every couple hours for a couple days after I got my cast off. it helped WAY more than just lotion. She should also GENTLY exfoliate to get rid of the dead skin. Light massage of the olive oil feels FANTASTIC.
good luck - I feel for your daughter!!!!!!!