From The Grey House:
Edwin did not wait for a response but left the girl and took his bodyguard. Vincent watched them leave for a moment, a little baffled by the fact that Edwin seemed to relish the fact that he was not the actual Captain. He shook his head then realized: as long as Christopher was alive, no one could kill Edwin for the title, unless they were next in line. The next in line was doing everything she could to ingratiate herself with Edwin. The rest of them were watching their backs or getting killed systematically. Until Christopher returned and took his title back, Vincent would have to leave Edwin alone.