Board Thread:News and Announcements/@comment-6493589-20150619172544/@comment-11188061-20150628014350

Otherwise she wouldn't have left the White Fang in the first place. She was already on a path towards redemption at that point, but it's also clear that Blake is a hardheaded person. It takes a waterfall to shift her opinions, and we can see that Blake never really meld with her teammates until Episode 15 and 16. You can enjoy being friends with someone, and yet never bond deeper beyond 'acquaintances' or 'good friends', and that was exactly how Blake is prior V1E15. Until Weiss, the person she thought to be one of the main culprits of the Faunu's misery, dragged out all of the deeprooted prejudice she has for the humans (that they cannot be trusted, that all they want is to live wealthily on top of the Faunu's misery, that they can't possibly understand or forgive a Faunu etc), perhaps Blake herself didn't realize the extent of her own hypocrisy.

In Volume 2 things has obviously improved. Blake finally acted on her promise and didn't try to run away from the issue - although she still needs to be questioned on it - but there are still remnants of it lingering. Now, she already understand that Team RWBY will not betray her and that they are her true friends, but it's obvious that she still find it really hard to trust other humans.

She was very wary of Professor Ozpin for example, despite his display of deep sincerity. Him being an adult also plays a factor, since an adult is someone who has the power and responsibility to shape the world. The mere thought of Roman makes her want to murder someone. That she obsesses over his influence over her fellow Faunus to the point she couldn't sleep shows exactly how much she hated him; his kind of human that has brought misery to her race and make them monsters.

At V2E11, Roman continuously goads Blake into committing a grevious crime, and the fact that she was very, very tempted to do it - and might've done it, if Weiss wasn't tossed in like a sack of rock - shows that she has simply channeled her hatred towards a different direction. If Roman was a Faunu could she have shown the same amount of hate and bloodlust? I'm doubtful of that.