I do not really believe KA's sister will face charges in the apparent fraudulent use of her passport. If CA says that it was taken without her knowledge, it would probably be difficult to prove otherwise, unless there were intercepted calls or texts between the two of them discussing it, and surely they were smarter than that. Perhaps just the threat of charges will enable LE to get more information from her. I believe that CA will be one of the key witnesses called to testify in court about KA's actions after the murder of MW, and her flight to NY, and I think it may be in LE's best interests not to make her any more hostile of a witness than she would already naturally be. JMO