It's circumstantial, but you may be able to get the court to modify or outright end the child support obligation. As of July 1, 2012, Indiana law will change to make the duty to support end at age 19, rather than 21 as is current law. Whether your obligation to pay for her because of beauty school is something you should hash out with the judge.
Advice on this forum is for informational purposes only and should never be mistaken as a substitute for legal advice. If you are in need of legal advice, you should consult local legal counsel.