Legal Question in Credit and Debt Law in Illinois

I am sensing a theme developing:

I would suggest thinking through this carefully. If you plan to pursue this, you will essentially be throwing your wife under the bus. In order for you to argue that you are not responsible for the charges, you will need to claim that your wife committed a crime. This may subject her to criminal prosecution. And I can assure you, it will cost far more than $700 to defend her. So unless you plan to change the beginning of your question to, "My convicted criminal and soon to be ex-wife . . . ." the two of you will need to figure out how to pay this and have a discussion on how to prevent this from happening in the future.