>>1411619It's not normal within the context of the show, but that doesn't mean she's irrational. She's a high-functioning expert who enjoys doing what she does. It just so happens that she enjoys killing monstrosities of nature beyond human comprehension with giant synthetic humanoids.
As a side note, I had a dream last night wherein I was watching some super secret premier of Eva 3.33 and Mari was in the audience watching it with me. The premier turned out to be a fake...