have her look up 'Breach of Contract Attorneys' in Arkansas.

There are a few angles that may be worthwhile. Since it's likely a mcdojo, if they have someone underage or underqualified teaching you...that may be a breach of contract.

The "doctor's note" is worth asking a lawyer about.

If the instructor has any fradulant claims:
-bogus rank/qualifications
-false advertising like saying 'self defense' yet delivering tournament sport. the argument would go something like: "I'm a female college student, and I was looking to learn how to defend against attack...not score points with a judge."

There has to be a clause on the contract that deals with the fact people sometimes move too far away to attend class. or other hardship clauses. That may be an angle to make a case.

In any event, talk to a lawyer.