QDRO was filed post divorce and signed by both parties. The pension plan belongs to the wife. Husband received a set amount and the divorce agreement notes that he will remove the monies and either a) roll to an IRA or b) collect cash and pay tax penalties. Parties and judge signed QDRO on 4/14/2010. Alternate payee did not remove the monies as far as we can tell. He died in October of 2016. The QDRO did not identify beneficiaries. The husband did not remarry and had no will. He shares on biological child with the ex-wife and two stepchildren. What happens to his portion of the pension?