Melissa Rosenberg was included in EW‘s Best of 2012 behind the scenes. In her interview she talks about the Breaking Dawn 2 battle scene from conception to screen.

Check it all out here. Below is an excerpt:

We were filming Eclipse up in Vancouver, and Stephenie and I were having dinner at a steakhouse. At the time, she was debating whether she even wanted to make the fourth book into a movie, and I was debating whether I wanted to continue on with the series. Stephenie knew the book ended with this really tense conversation, and she knew that that wasn’t cinematic. We started talking about the ending, and I don’t know who had the idea [to do the battle scene] first — neither one of us can remember exactly. It felt simultaneous. We just went back and forth and were like, “That’s it! That’s gonna work!”