You would be looking at filing a Complaint to Determine Dischargeability under 11 U.S.C. 523(a)(6) but, you may have an uphill battle proving that the debtor acted wilfully AND maliciously. You must file the Complaint timely and I highly recommend you immediately contact a local attorney to discuss your options.

As stated in In Re Garritano, 427 B.R. 602 (Bankr. N.D. Ohio, 2009)

" Section 523(a)(6) provides that a chapter 7 discharge does not discharge an individual debtor from any debt "for willful and malicious injury by the debtor to another entity (that's you) or to the property of another entity." Thus, for a debt to be non-dischargeable, the injury must be both willful and malicious. A willful injury is one that is done voluntarily, intentionally, or deliberately. As such, only acts done with the intent to cause injury—and not merely acts done intentionally—can cause willful and malicious injury." The Sixth Circuit Court of Appeals has specifically held that "unless `the actor desires to cause the consequences of his act, or ... believes that the consequences are substantially certain to result from it,' he has not committed a `willful and malicious injury' as defined under § 523(a)(6)." . . . A malicious injury is one that is done "in conscious disregard of one's duties or without just cause or excuse...." "

Des.