If you are trying to find a lawyer, you need to look one (or more) up on AVVO and contact them. Lawyers can't solicit your business in this forum. I can't tell if they think it's your wife's debt or if they still think it's your debt. Either way, the person contacting you needs to clarify what their role is. Something is puzzling about being wished good luck, as if that lawyer is not the one issuing the subpoena. But without seeing the papers, I can't say what is going on. Maybe you can ask your question again and clarify what the subpoena says.
The dialogue on this website does not constitute legal advice nor does it form any sort of attorney-client relationship.