My question was really just tongue-in-cheek. I wonder if the foreign family knows the rules though?
The first thing they (or anyone else) should do in such a situation is HIRE A LAWYER.
The Lawyer will no doubt (if it is in both the defendant and the victim's interest) make noises that it might be nice if nobody had to go to trial - and then the victim's lawyer could offer an out-of-court settlement.
Just going up to the victim and offering them money is obstruction of justice.
Ignorance of the law is no excuse.
Their intent was to obstruct justice - and they pursued that intent with criminal acts. A lawyer could have walked them through that particular minefield safely and they could have (no doubt not for the first time) paid to get their son out of trouble. Instead now they are ALL in trouble with the law.
Here in America I call that a “RIN RIN Situation!” ;)