Board Thread:Speculation House/@comment-14138255-20151213162620/@comment-11188061-20151214020855

He most probably didn't 'guess'. Faunu have animal traits so it can be assumed that their senses are stronger than a normal humans. Maybe Blake smelled or acted or showed characteristics that only another Faunu like Wukong would pick up on.

It may or may not come as a surprise, but the character I've most strongly relate with is Yang (not for the reasons you think though). Anyway, here's what I think about her current emotional state,

At first she strongly believes in her own innocence, but grows more and more uncertain as time passes. This is because her breaking Mercury's legs is a fact which everyone saw, but she is the only one who saw Mercury attacking her. In hindsight she also definitely overreacted, because not only the dude didn't have Aura - it's pretty obvious too. with the visual and sound effects of a person losing his Aura completely - and he is her acquaintance, so she could've chosen a much gentler way to put him down despite his antagonism. Yang herself probably would've reacted like a sore loser during her younger days.

Eventually the guilt will make her believe that she deserves her punishment. Even if she suspected something before (like the strange sound of a Semblance activating before the attack) it would be quickly washed down by her emotions. It's really the perfect mental attack against Yang (Blake too, which is why Adam is going to utterly destroy her next half of the Season, yay).

Of course, this is assuming that her Huntress experience is still fresh. She seems more experienced than anyone of the girls so there's a chance she won't let her guilt override her judgment - even more so if she's allowed a meeting with Qrow, because that man is someone who has gone through enough to not doubt himself - but the chances are low.