On reflection, my favorite moment in the film is when Diana turns around and starts to take her hair down, while in the trenches along no mans land. It was a quiet little moment ahead of a bombastic one that is getting the most attention, but that small moment resonated more strongly; literal goosebumps. She's like, fuck this shit, enough talk.
I also really enjoyed the scene of Steve trying to explain to her, after she's killed who she thought was Ares, that things are complex and messy and there are lots of bad people and you can't just solve that. I thought Pine did a good job with his apologetic frustration, and Gal's naivete slowly crumbling down was affecting.