Rowan wrote the letter to express her dismay at the lack of female superheroes and merchandise, saying it was unfair that there were many superman and Batman movies but no Wonder Woman movie.
Here's a transcript of the letter in full:
My name is Rowan and I am 11 years old. I love superheroes and have been reading comics and watching superhero cartoons and movies since I was very young. I'm a girl, and I'm upset because there aren't very many girl superheroes or movies and comics from DC.
For my birthday, I got some of your Justice League Chibis™. I noticed in the little pamphlet that there are only 2 girl Chibis, and 10 boys. Also, the background for the girl figures was all pink and purple.
I remember watching Justice League cartoons when I was really young with my dad. There are Superman and Batman movies, but not a Wonder Woman one. You have a Flash TV show, but not a Wonder Woman one. Marvel Comics made a movie about a talking tree and raccoon awesome, but you haven't made a movie with Wonder Woman.
I would really like a Hawkgirl or Catwoman or the girls of the Young Justice TV show action figures please. I love your comics, but I would love them a whole lot more, if there were more girls.
I asked a lot of the people I know whether they watched movies or read books or comics where girls were the main characters, they all said yes.
Please do something about this. Girls read comics too and they care.
The tweet was retweeted a thousand times - and DC responded.
Yes Rowan, girls read comics too! Wonder Woman movie & Supergirl TV both in the works, with more exciting girl power announcements soon!— DC (@DCComics) January 30, 2015
Renée, Rowan's mother, further explained Rowan's frustrations to the Daily Dot:
"The things is, it's not that there are no female superheroes," Renée said. "There are lots of them, as comics fans know. But in terms of what's available for kids when you walk into Target or Toys-R-Us, the superhero world looks pretty exclusively male.
"That's frustrating for girls who are fans; the boys can wear their favourite superhero all the time, but to this day we've never seen a Hawkgirl T-shirt for kids. It makes the girls feel like they're not important in the comics world, and that's hard when it's something that they love so much. Frankly, Rowan doesn't like not being taken seriously."