As someone who saw an ortho, a podiatrist and then another podiatrist, you have to keep seeing someone until they give a crap and I am not kidding.
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The issue with ignoring the mechanics of the problem is that you get bone spurs, your hips go out of alignment, throws out your back and so on. So what I am saying is you need a really good diagnosis of the problem aka what exercises she should be doing daily for her condition.
In addition you need a good PT. A bad one will mess you up as well.
Bottom line, good thing your dd is in dance. Overall exercise is the key to staying in balance. A good core & strength can go a long way. Orthotics may help or hurt as well, so keep an eye on it. She will need exercises to combat the shift in her walking/alignment. So make sure you find out how the orthotics will shift her whole body movement.
Good Luck!