I think that was one of the best things about this movie, actually.
She's *supposed* to start out totally na­­ïve—she thinks men are
innocent, and all evil is caused by Ares. How would she know any
differently? She just got dumped from an island whose technology hadn't
gone past the level of Ancient Greece—an island…

The importance that her relationship with his is assigned makes total sense. Her mother and her mentor were amazons, not mortal men. Aries was trying to convince her that *humans* are evil, so she had no reason to think of amazons as examples of why humans are worth saving. Besides, she had literally just seen him…