My daughter is 20 years old, lives on her own, and has a full time job in the state of Indiana she hasn't lived at home for a year, my ex-wife is still collecting child support on her, and I have told her several times to get her taken off, I live a different state, and I've talked to a lawyer up there, and they said my wife has to sign a paper, but if she doesn't want to that is her option, until my daughter is 21. What can I do from a different state?