Wow, this looks like fucking ass.
Why the hell would you name your goddess Athena and then have her do something that she had nothing to do with in the mythology? Either actually spend a few seconds thinking of a name, or give her a fitting existing one.
Also, Fey's words being changed isn't interesting, it's annoying at best. I've read four manga with this theme, and only one managed not to screw it up completely.