Create a fake female role model employee that was previously at the company. Talk about how that role model was successful despite challenges X and Y because she did Z.
Of course the problem with this is that the facade will crumble at some point because the person doesn't exist.
Someone I know got their career start as a janitor. Their first boss would teach technique by saying things like, "We used to have this guy, he mopped the floor like this (demonstrating), can you believe that? I do this now."
Of course the problem with this is that the facade will crumble at some point because the person doesn't exist.