Girls like comic heroes if it has something designed for women in it. Honestly, I feel like I have run into more female fans of Batman and Teen Titans IRL than male. My sister has mass binged like every DC show and movie that has Knightwing in it, and she used to binge the CW Arrowverse.
The difference between Batman/Titans and Wonder Woman is that they play to the things girls like. Batman has the whole true-crime/goth angle with big eccentric foes. He has the hot romance with Catwoman. Finally, he has the Bat-Dad shtick, which really seems to be the biggest grab for girls as they like seeing the loner dad take care of his bratty 10-year old with a sword. Then you have Teen Titans, which is literally just a CW Teen drama with a capeshit filter, which can also be said for the CW Arrowverse. It is just a lot of relationships and young people dealing with trauma and bad parents, and everything else you can name. Shipper galore for these properties.
Marvel is failing in the same way as WW, in that in making her a strong, independent female, no women gives a shit. If WW had more relationship shit with Steve, and a bunch of teens she has to deal with to make her Wonder-mom, then women would probably give a shit. As is, women really get into Batman, Spider-Man, the Flash, and Teen Titans because they are the only ones that figured out how to do relationship/family drama shtick.