ANALYSIS: SUBJECT IS TIME LORD

There was another pause. Everyone except Ava stared at the screen in disbelief. Ava waited for a few seconds to let it sink in, before jumping in the air. She landed and twirled, giving the Doctor a kiss on the cheek.
"I am wictorious!" she declared.
"Wic…torious?" River asked. Everybody else was still staring at the screen.
"You know, from Yu-Gi-Oh Abridged…that is out around your time right? I could've sworn it was from the 21st Century…It doesn't matter," she said shaking her head. "I'm Time Lord! I proved it. I was a bit worried there. Who knows what being taken in and out of dimensions does to ones DNA? Haha!" She gave another twirl. "I can get my life back. Starting with…. Doughnuts!"
"Doughnuts?" Rory asked dubiously.
"It has been over two centuries since I've eaten anything. I want a doughnut. A Krispe Kreme original glazed doughnut. You can get them in Australia. They are wonderful. We have to go there. But first, I'm going to take a shower, then take a nap. Then we can go to Australia." She paused. "Yep that sounds like a plan." Then she turned and retreated back to her room.
There was a silence.
"…So… Doctor." Amy said. The Doctor looked at her distractedly. "She's…um…one of you." He nodded. His face had lost its colour.
He tried to rationalize it. Was he dreaming? No. He remembered every point leading up to the moment, and he had placed new security measures following that unfortunate adventure with the 'Dream Lord'. And he would know if it was simply a dream. Unless he was in an Artificial World… No. His mind and the Tardis would have let him know. So this was real. Was the Tardis wrong? No, she had never been wrong, not in the 900 years he had known her. Not to mention River…
So it was true then. He wasn't the last of his species. Should he be relieved? Happy? Angry? Scared? Frustrated? Cruel? Sad? Rude? Ginger? Well, not the last one (unfortunately). But he had nothing. No answers. For the first time in his life the Doctor was truly speechless.
"Doctor, are you okay?" Amy asked concerned.
"Oh, he's fine." River said energetically. "Just give him a few minutes. Ava told me he'd be like this. She said if he doesn't recover in three minutes to steal his bowtie."
"Hey," the Doctor said. "Bowties are cool."
"He's back," Amy said mockingly.
"Of course I'm back. Did I go somewhere?" Amy and River laughed. "No, seriously, it's happened to me before. Bit annoying actually. Not good for the Time Lord image." He straightened his bowtie. "So, where were we?"
"Doctor, that girl is a Time Lord." Amy clarified.
"Ah yes. Time Lord." The Doctor said loudly. "Well, I didn't expect that. Did you?"
Amy shook her head. "Nope."
River grinned. "I did!"
'Oh yes, but you already knew. That's cheating." The Doctor said, acting cheerful because he didn't know how else to cope. When your world is falling apart, smile. It's cool.
And for one of the first times in his lives, he had no idea how to proceed. So he just smiled.