Amy smiled when the Doctor guessed her full name correctly. Somewhere in this stranger of a man was a piece of the Doctor she knew. She stood up and walked around the console towards the button he'd pointed at. As she passed by him, she raised a fist to give him a playful shove, but then realised that this probably wasn't the proper time, and that this Doctor most likely wouldn't appreciate someone he didn't know punching him on the shoulder, no matter what the sentiment behind it was. Instead, at the last minute she changed it to an awkward thumbs up, then dropped her hand, embarrassed, and continued on to her spot in front of the button.
Still slightly too emotional to speak, she gave Donna a look and a smile that she hoped conveyed her thanks.