It is hard to say if you should file bankruptcy for this $9026 debt. First you have to determine if you should file bankruptcy based on your total debt, and total assets. Then determine if a Chapter 7 is appropriate and if you meet the means test. If you can't qualify for a Chapter 7, then you see if you qualify for a Chapter 13, you must be able to have the ability to make payments on your debts over a three - five year period.
This all depends on your specific financial situation. In a bankruptcy you take your total assets, anything you have an ownership interest in, and total it up. Then you take State specific exemptions (this is the amount they "exempt", they don't take it), and anything left over is distributed to your creditors, if there is anything.
If you do file bankruptcy then this debt will be classified as an "unsecured debt", and any judgment they may have received would be wiped out.
It would be best for you to contact a bankruptcy attorney in NH so they can go over your financial situation in more detail. If this is your only issue, it may be easier to try and negotiate with the debt collection agency and pay an agreed to amount. If you go this route, make sure you get the agreement in writing, and with all the specific amounts and time frames detailed in the agreement.