Warning: Spoilers for Wonder Woman #3 and slightly for Justice League #3.
In JL #3, as a younger heroine full of Amazonian pride, she requests a child call her Diana who had called her Wonder Woman.
At the end of WW #3, she says not to call her Diana any longer and to only refer to her as Wonder Woman because of the shame she felt.
If that's not brilliant and subtle character development then it was one of the best mistakes ever. Holy crap, I was amazed by how clever that was. Go DC!