Family moving from northern canada to arizona. will my teenage daughter be able to get her braces adjusted, and at what cost?

Braces: Hopefully you will have a dental plan and your orthodontist can make a referral. Get as assessment for her treatment. All the best.

Hard to say: There will certainly be local providers available to do such a service. The out of pocket costs vary by region & whether you acquire a dental services insurance that would cover part of the costs. I would contact a local orthodontist office after you arrive & ask these questions.