You can sue anyone you want if you want to spend the money and the time. But IMO you have no grounds for a lawsuit based on these facts.

Only the cops can press charges. If you know where he is you can attempt to sue him. But the likelihood of him being in the U.S. is next to zero.

IMO what the doctor did was perfectly "legal." Your remedy is to go to another doctor.

If you have an attorney, speak to them. If not, this is a situation we see everyday here on AVVO. A pro se litigant who is convinced the judge is...

You may be able to sue for the value of their services. You cannot sue for emotional distress.

None of us volunteer attorneys has a clue why your fiancee's employer did this.

This site is for general questions about U.S. legal issues, not England. And you must be 18. You say you are 13.

Only the police/DA can press criminal charges.

That is up to a court to decide, based on all of the facts (which we obviously don't have.)

There is obviously going to be a problem with proving your case but if you can find an attorney to take your case yes you can sue.