Her retirement funds are protected by bankruptcy exemptions. You should contact an attorney so you do not blow the deadlines. $30,000 is worth an attorney to you I assume. You can find collection attorneys in this web site in your area that can represent you for the objection.
You are correct that your ex-wife may be able to discharge the $30,000 that she owes to you in a chapter 13 bankruptcy proceeding. This is assuming that she completes her chapter 13 plan payments. Your objective, along with a competent legal representative, is to find some defect in her chapter 13 plan, her schedule of assets and liabilities, her ability to pay more to unsecured creditors, or her eligibility to be in a chapter 13 bankruptcy at all. You'll need to challenge this bankruptcy on a technical level, because the law is not going to protect you here. Good luck!
Chapter 13 cases can be very technical. Perhaps you/your attorney will be able to object based upon the failure to properly list assets, or failure to properly reflect her living expenses, or failure to comply with the Bankruptcy Code.
The problem is, the Bankruptcy Code does permit a payment for equitable distribution to be discharged after a debtor completes payments under a Plan. You may not be able to avoid your ex from escaping the full amount of the equalizing payment.
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