Donna reached over and took Amy's arm, pulling her away from the Doctor. "Amy..." She sighed. "I told you, it's best to stay out of his way right now, he's not even going to be civil with me at the moment, and I'm his best friend." It was nothing personal- he was just in one of his moods, and they'd do better to stay out of it. Nothing to do now but fret over him. She smiled at the younger woman, apologetic. "I know you're worried but there's not a lot you can do. Time is probably in flux or something else Time Lord-y and he's just going to snap at anyone who isn't him right now."
She rubbed Amy's arm in what she hoped was a comforting manner. "Now then, shall we hold on for dear life while he figures this thing out?" She left Amy and walked over to where he was, glaring. "You know, spaceman, you could try a bit of tact. I know you know how to use it. Now what do you need me to do?"