I was diagnosed with Scoli when I was 12 years old and had two surgeries when I was 13, I am not almost 33. I live in daily pain, the surgeries stopped the curing, but didn't take away the pain.
I understand your daughter not liking tight close, for me its because its hard enough to move, tighter close just bug me. Im sure the brace wont bother her once she gets use to it. And if it takes away her pain, she wont mind waring it. I wish her good luck with that.
Long car rides just kill me. I can't sit that long. We have to stop often for me to stretch and move around. As I grew older I realized that I don't like staying in one spot to long. Even when sleeping I tend to move a lot.
I have fallen in love with a few items that really do take away the pain. One is MBT shoes. I had a pain for 20 years that nothing would take away. These shoes take the pain away. I am so amazed. Its all I will ware, in fact I just bought sandals for our trip in Aug. Im not sure if they will have her size. If they don't please keep the name, she may need it later in life. They are pricey and there are cheaper ones out there. But they are just not as supportive. For the average person Im sure the cheaper ones are fine. But for your DD and they pain she may live in, get the MBT. I would have her(when ever she can/they have her size) try them on in the store, but order them on line. They are cheaper on line. I found for myself I needed to order a size larger then I would normally. Im not sure why, but they fit better when I do.
http://us.mbt.com/Default.aspx?lang=en-US
Other items that have helped me are from the relax the back store. If you don't have one close, no worries, just order on line.
I love love love the self inflating lumbar pillow. I have an "S" curve still in the 30'-40' range(I forget its been awhile since I was messengered) This pillow is easy to carry with you anywhere, I take mine to
Disneyland and World. Its a great relief during the day. Because the rides and chairs when you are out and about aren't all that great. It also helps in the car a lot. I do have the cover they offer for it. It helps sometimes when in different chairs, but not a must have for me.
http://www.relaxtheback.com/self-inflating-back-rest-rectangle.html
I also take with me on car rides, planes or even just at home, the memory foam seat cushion. I love anything that is memory foam(I even have a 15" memory foam bed which is the only bed I can really stand, before this bed, I never slept well) The seat cushion isn't as portable for in the parks, but good enough for the plane and car. I have read they have inflatable seat cushions and will be trying that soon.
http://www.relaxtheback.com/travel/seat-cushions/the-seatcushion-by-tempur-pedic.html
I also use a walking stick when doing a lot of walking. Sounds crazy, but it helps. Mine is like the link below, but I have a rubber tip at the end. Why it helps, gives me stability after a long day of walking. Its nice to lean sometimes and take pressure off my back. Your DD maybe to young for this, but its good to keep in mind as she gets older. You never know what works for people.
http://www.rei.com/product/745686
About 4 years ago I found a physical trainer who was a physical therapist. He is god sent let me tell you. Working with him has taken away so much of my pain. He has give me stretching exercise that really do help. (if you are in or ever will be in So Cal, let me know Ill pass along his information)
My trainer has be do stretches for about an hour before even getting out of bed, which really helps. Not sure if would help your DD. Ive lived with this for 20 years and with a desk job I have gotten ever tight and I need to do a lot of stretching to keep the pain down. Anyhow, so I also travel with an exercise ball which helps too.
Oh and I take memory foam to put on top of beds when traveling. I also ice my back down after a lot of walking. I have one suite case full of the items to make life less painful.
I didn't realize all the items and things I do/have to help. I hope this does't scare you. Scoli can be painful and some people its not painful after surgery. For me the surgeries helped a lot. Before I could barely walk the mall. Now I can walk the mall, but as I have gotten older my body gets tired quicker, just like everyone else.
I would be happy to answer any questions you may have. I am so sorry your DD has it at such a young age. At least she is in a era where technology is better. I hear the new surgeries are so much better then what even I had back in 1991. I knew a women who never could have surgery because it didn't exist. So these days are better, even on the days it doesn't seem like it. And I know as a parent its harder on you in so many ways. Its never easy to watch someone you love go through something like this. Hugs to you.
Oh and a side note, since your DD will have many xrays ahead of her. My parents are in the medical field and they saw me go through xray after xray till the tech got the right spot. talk with your xray tech and ask them how they know they have the right spot before they shoot the xray. For my day, they had cornates some X and Y numbers. They gave those numbers to my parents and each time I got xrays they lined it up right so I wasn't over exposed. I think tech has changed now. But your DD is so young, you want to limit her exposer when taking xrays.