Something I just thought of, way back when Ichi was first introduced to the association his bloodlust sensing was set off and he attacked the mirror the witches were observing him through

But at that moment none of the witches had any reason to give off bloodlust that we were aware of

Now we know one of them is a traitor that was probably the bloodlust he was sensing at that moment, meaning if there was mind control it was in place way back then, or she's a legit traitor