Board Thread:Speculation House/@comment-14138255-20140815002519/@comment-14909251-20140822025107

Blake is by everyone's acknowledgment "anti-social" and "quiet" and there is the whole "did not know she was a Faunus despite living with them for months" thing to consider. Given that only Ruby and Yang knew each other prior to Beacon, we can safely presume that most of the first few months was spent learning basic stuff about each other. You know like and dislikes or where so and so lives. When it comes to combat, learning the exact nature of a Semblance does not seem too important. It is hard to say how much combat they even really saw up to that point.