IMO you have no basis for a lawsuit. I hope your daughter gets the help she needs.

All good questions for your lawyer.............

This simple Q & A forum in no substitute for what you need, which is to hire an attorney and pay them to file suit on your behalf.

Most likely, but that is up to the judge. Your BF has a lawyer. Ask them.

We have no way of knowing, but it sounds like a scam.

Lawsuits are expensive and time consuming. The cheaper and easier alternative is to find another venue, then perhaps sue in small claims court for...

Solicitations are not allowed here. Find a lawyer at AVVO https://www.avvo.com/find-a lawyer

Perhaps hire a PI to confirm, or refute, your suspicions.

"If you don't stop, I will threaten to kill you." That sounds like a crime.

Tickets are not magically dismissed. You should retain a TX traffic ticket attorney.