My brother recently went to jail, the letter is in his wife's name. Don't want to go into details about them, but they are not nice people. For whatever reason, they have been giving my address as theirs for the past few months, so I received this certified letter for her. I told the mail carrier that she doesn't live here, but he said that since I know her I can sign for it. Pretty sure that it's a subpoena for her to go to my brother's court date, but I have no way of getting hold of her. What should I do here?