This was great!!! Though I do feel like Batman's being roped into playing a role that doesn't completely suit him. Not because he's a dick--I have no trouble believing that Batman could come on relentlessly after his prey and refuse to be stopped even with Wonder Woman telling him to stand down. It's just a bit interesting that we've got a teenager here who's been abandoned by the law and Batman's not on her side in any way that we can see. Batman and Wonder Woman are both candidates to be this girl's advocate, and since she's from Gotham I'd almost expect Batman to be all the more protective of her. She's killing the people who murdered her sister when the law didn't care. I'd almost expect him to feel guilty for causing their murder himself for not taking them in himself.
But that said, I love the Diana story and her actions, especially when Batman tries to supplicate himself.