I have been fortunate in my dealings with chiropractors and massage therapists, too. The ones I saw weren’t looking to sign me up for lifetime of treatment. They were hoping to NOT see me again. Both gave me tips for how to deal with the issue at home, like foam roller or strengthening exercises.
It was a hurdle to let someone touch me while I was in my underwear. (“Underwear” was a sports bra and running shorts.)
I would recommend a back snd spine center. Most have several types of doctors (incling physiastrists) but all specialize in backs. They will probably refer her for pt, but you really don’t want to embark on that path unless you’re sure it won’t make some worse. I know that young spines can be prone to small fractures from overuse, girls in particular may have s coliosis, etc.
Regardless of what it is, it usually will improve with time.
Once you know what you’re dealing with (or alternatively that you’re not dealing with anything dire), a PT can be worth his weight in gold. Some people have great luck with acupuncture, massage, orthotics (??), yoga, swimming (natural traction), etc.
A good mattress and a good desk chair can help as well.
I don’t remove any clothing other than jacket or sweater and shoes when I am at the chiropractor-- the massage theray is also done fully clothed. (That could be partly related to what I am wearing when I show up in the first place-- I wear casual clothing, like slacks & a t-shirt – I’d assume that if I was wearing a top that was very bulky or restrictive, I’d have to take it off).
As to yoga, there are different types of yoga and for back pain, you would want to be starting with a restorative or therapeutic class. The studio I go to offers all types, geared to all ages.
GOOD yoga teachers are careful about the health issues of all participants. My favorite yoga instructor would always ask each person if they had any iarticykar health issues and would modify the poses for those in the class that had specific issues (back, neck, etc). Some instructors are better and more sensitive to these issues than others.
Back in the day when I was in a personal Injury law firm, we did have some patients who were badly injured by chiropractors, but I’m sure like all professions there are great and poor ones, just like physical therapists.
My yoga teacher does something called yoga tune up where he evaluate your issues (back pain, etc.) and does poses/exercises to help fix them. He also asks about health issues of each person at every class and adjusts accordingly.
One family member went to PT for a standard sciatica/disc issue. Gave him a few exercises to be done daily and no more sciatica (vs. the back surgery the doctor proposed.)
Another family member has a great PT who evaluates everything. This PT has made some wonderful suggestions - see an eye doctor to stop looking too closely at your computer screen, only carry stuff in a backpack (never on one shoulder), get a special back cushion for desk at work, get a special leg rest for desk at work, etc.
One family member had a great experience with a chiro. She also made great suggestions - heel lift in shoe for uneven legs, magnesium supplement as a muscle relaxer, etc.
So all of these practitioners, if skilled.caring,and well trained can do a good job!
I’d go to a good chiropractor - not the old fashioned kind that cracks your back, but the kind that knows how and where to apply pressure. I had a longstanding issue fixed literally with one bump. It took him 15 minutes to arrange me in exactly the right position, after the X-rays. I haven’t had the neck and shoulder problem again and it has been about 15 years now.
Also doing common sense stuff makes sense, of course. Good posture, computer and TV at right height, etc. No slumping over on the bed for long periods of time while working on a laptop. Common sense.
If the lesser intervention doesn’t work, only then it is time to look further.
How could you possibly know that? Even if you were a physician, I don’t think you could accurately diagnose this issue over the internet. We really have no idea what’s happening or why.
OP, I’d start with your primary physician. Arrange to get pictures of your daughter’s spine. If the structure is okay, start pursuing specialists. Before you can settle on a treatment, you really need an accurate diagnosis.