G,
Something to consider with the wife. If she wants to handle it, fine. But add a stipulation that if they miss more than 1 payment date, you take it over. And with the understanding that you'll take them to court with every fee you can think of. Make sure she tells them that stipulation to help motivate them to stick to the plan. Also, she needs to make sure she writes a contract update with the new payment plan and with these stipulations. Get them to sign it. Signed contracts & revisions are great in court, and when a judge sees that you were lenient and they still screwed you then you'll look even better.