It's quite obvious to me that you do not have an attorney representing you in this matter. That's a huge mistake that I strongly recommend you remedy at once. Most of us here will provide you with a no-cost consultation. Take advantage if that to speak privately and confidentially with one or more qualified criminal defense attorneys. The total cost to you--a bit if your time. Good luck.
You need an attorney now. I f they sue you and prevail, they will file documents and try to get a judgment against you and then possibly put a lien on your real property. This is not an immeduate process and could take months if not a year. Your rights will be better protected if you hire an exoerienced attorney.
I do not see this as a criminal matter but it is obvious that you need an attorney. It sounds like you stand to lose a lot so an attorney would be a wise investment .