Something was wrong about the entire situation he perceived.
Megane as a living being made no sense at all because she seemed more of a doll or even a marionette than a proper living being. When he looked at her he felt that even wild beasts would show more emotions.
She was silent and not even during the fights did she utter a single word, let alone sigh, breathe through her mouth, sweat, or anything like that.
Meanwhile, announcing her existence wouldn't have been much of a problem if the Dark Ice Elves or the Advanced race that backed them had refrained themselves from attacking other races needlessly!
This meant that since the beginning, they should have kept a low profile without trying to destroy the other elven races, let alone a multitude of basic races!
Because he didn't think that those two races were stupid enough to not know about this, Shane assumed that they had a solid reason to behave as they did.