A 20-year-old woman is facing two counts of terrorism-related charges after allegedly penning threatening notes aboard Royal Caribbean’s Legend of the Seas. As a result of the notes, the Legend of the Seas sailing was interrupted for federal investigation of the vessel and to question its 2,400 passengers and crew members. The Legend of the Seas was diverted from its planned destination of Hilo, Hawaii on April 23, to an anchorage located off of Oahu, Hawaii. During the investigation, Kelley Marie Ferguson of Laguna Hills, Calif., confessed to writing the two notes threatening to kill all U.S. citizens aboard the Legend of the Seas in hopes of ending a family vacation early to return to her boyfriend. She appeared in federal court Monday and a hearing is set for Thursday.