It’s not as if women have some sort of mysterious homing pigeon hormones that allow us to swarm the best in lady culture when it’s published even if no one lets us know about it. I’d be genuinely curious to know if Marvel and DC have done substantial advertising campaigns in women’s magazines, or on female-oriented television shows when they’re rolling out new storylines or new artists on comics with female characters? Or if they’ve pitched their comics characters as cover girls or interview subjects a la Marge Simpson’s Playboy spread? Just for fun, I checked the Cosmopolitan and Marie Claire archives for references to She-Hulk, Ms. Marvel, the Scarlet Witch, Catwoman, Wonder Woman. Only the last produced any results actually related to comics or related products: in a guide to famous breasts in Marie Claire that misstates Wonder Woman’s history. If any other industry was making a push to get a product to its core audience and was failing that miserably in reaching them, they would fire their PR people and their marketing department. Maybe someone can offer information I don’t have here, and if so, I’d be curious to hear it.
You can’t expect women to go into comic book stores if they have no idea that anything’s there for them. You can’t expect them to swing by comics and graphic novels sections in physical or online bookstores if they have no conception that there are characters they should get excited about. If you really want a female audience, go after it.