New Brevoort Formspring

what would you suggest as a great book for young readers. I'm out of touch with what Marvel offers to the younger - exploring options (at this point she likes My Little Pony, Scooby Doo and Godzilla comics - yeah opposite sides of the spectrum I know). She loves the Iron Man movies, likes Hulk, and loves the Avengers battle scenes in the movies but gives a pass to the Superhero Squad tv show and the Avengers cartoon. Help - she loves to read (she's 6) looking for options.