The question

Earlier this year, my parents divorced and my father found an "easy and quick" paralegal office to proceed with the case. The Final Judgement says that they provided a financial affidavit, but my mother was never asked to turn in any paperwork, documents, or financial history and she never saw any of my father's. The paralegal asked them questions and they responded out loud while the paralegal wrote it all down, but again, did not ask for any financial documentation to prove what they were saying. We are convinced that my father stole money from their joint bank account for years to fund his affair. Is there any way to reopen this case in court?