I guess the worst thing Ilia did was suppressing her faunus heritage. I mean, I know why she did it, but as someone who suppressed so many things about myself for far too long, I can tell you that it´s far worse than anything that could happen when being honest about these things.

Sure, I don´t change color based on my emotions (I´d be blue 24/7), but I do have a vivid imagination, resulting in a short attention span. I also have above-average hearing and smell, meaning that I notice a lot of things going on around me that others don´t notice.

Both these things were a bit problematic to me at first, as I had no idea they only affected me and was confused why noone else had any problems with this, so I tried to keep my imagination in check, don´t react to all the sounds and smells I noticed, and eventually, I began having anger issues. Like, every little thing could potentially trigger violent outbursts of rage, and since everyone expected me to know why I had these issues, which I only realized much later, it got worse.



My point is: Ilia was setting herself up to fail. She didn´t do it intentionally, probably, but she did. Same with Blake. Both tried to fit in as humans, and both failed. Both eventually got to a point where their anger got the better of them, and both blew their cover.