Good job...it's ALWAYS better to settle a debt BEFORE it shows up as a collection. I was in a similar situation earlier this month with a child support arrears of $600. It hurt to have to squeeze out that much money, but had it been reported, it would have dropped my FICO a good 30 to 40 points, which would have taken me several months to a year to recover from.
Any time you can give a baddie an abortion before it comes to term, do it.