A quirk in the way the Missouri law is written is that the police are often reluctant to bring home a 17 year old if they are in a safe place. However, that is by no means a guarantee that they won't. Nor does it mean that your parents can't drag you home themselves or that the people you stay...
I can see where they might be suspicious of you using the restroom so often. You note you having been using it due to your house being remodeled. I would stay out of the store.
The ages will not change the legal reply either - it is legal. However, depending on the ages, there could be a "moral" question as to whether it is the best arrangement.
You both might want to get lawyers & speak only to the lawyers. If you can't afford a lawyer, when you go to court plead not guilty & ask for a public defender (a PD is a lawyer). You can discuss your options with the lawyer/PD.
Was the agreement you signed getting your job & seniority back between you & the prison or you & the union? Is the prison AND your union now saying you have to earn your years of service back? Have you talked to your union currently?
They might have to give you proper notice & evict you through the court system but there isn't anything you can do about the loss of your job & your wife's job re getting them back. You can file for unemployment ins. (the state will decide if you qualify) or you can accept another job from your...
It's a shame people have to move due to situations like this but sometimes that is your best option.
You can report it to the management company & see what they say. Good luck.
Getting ins. now will not help you with any accident that has already happened. You will need ins. for the future though - discuss with a car ins. agent.