Well this is something none of us knew. Gal Gadot almost wasn’t our Wonder Woman due to almost getting a role in Man of Steel. Gadot was talking to Xnet recently and karma is a pretty crazy thing. The reason why she didn’t take the role in Man of Steel is because she was pregnant with her daughter. Apparently is was for an evil role, so the only guess I have is it’s Faora. Pretty crazy.
When I was a month pregnant with (my daughter) Alma, I got an offer to be the evil Superman character. If I wasn’t pregnant I’d take the job, and there’s no way they would take me now to be Wonder Woman.
Source: Batman-News