------------------Spoiler-------------------

Originally Posted by
James Ko
I think people could change for the better. And remember Yik's body guard, he is loyal not only to Yik but to his wife because she helped him before... meaning that she too could be in the triad and you can tell when she command the bodyguard to tell the truth she has that authority about her.
This doesn't show or even hint that Yik's wife is Yoyo. Yik's wife could just be a gangster head's daughter (thus giving her some power to help/save someone's life) or she just use her status as the wife of one of HK's most powerful gangster head to help the bodyguard. I think this is more probable than Yik's wife being Yoyo, who was not really a member of any triad. She was just a prostitute who happen to serve a few triad members.