The Doctor didn't run out of the TARDIS this time, she stopped, she was nervous. Amy walked over to her, realising how nervous she was.
"How long has it been since you last saw her?" She asked gently. She knew the Doctor, she knew what he, sorry, she, was like.
"About a thousand years."
"Wow."
"Do you think she'll like my new body?"
"Stupid Doctor, course she will." The Doctor nodded, and walked over to the door of the TARDIS. She opened it, and stepped out. Her fam and ex-companions followed her.

"River?" She called out, her voice echoing ominously between the tall bookshelves. There was no reply. The Library was big, it might take days to find her, the Doctor thought. She took out her sonic and scanned the surroundings, wondering whether the vashta nerada where still there. She couldn't believe her own luck when she found that they had mostly died out. But that must mean it could be hundreds, maybe thousands, of years since she was last here.

They walked around, up and down the endless halls, looking for any signs of River. The Doctor's fam were still confused, but had given up asking because even if she answered it still didn't make much sense. Besides, she seemed to be in a 'wanting to get on with it' mode, that was intense and serious. This was obviously something serious.

Then they heard a noise. It was the sound of a page being turned. You might not think they would be able to hear it, but they had been walking in such a dramatic silence they could hear a pin drop.

"Is someone there?" Called the Doctor, who seemed to be doing all the talking recently.
"Yes, I'm waiting for someone." Said a voice, the Doctor, Amy and Rory obviously recognised it, so the fam decided it was probably the 'River' person they had been talking about.
"River!" Called out Amy and Rory simultaneously, before the group quickened their pace and went towards where River was.
"Is the Doctor there with you?"
"Yes, I regenerated again." She said as if it were typical of her.
"Woman?" River asked.
"You don't mind do you" asked the Doctor nervously but hopefully.
"Course I don't stupid what kind of a wife would I be if I did?" The Doctor sighed with relief,
"Wife?" Asked Graham, Ryan and Yas at the same time. The Doctor just nodded and gave them a grin.

At that moment, they turned around a shelf to be greeted with a woman with huge, curly hair who was dressed in what appeared to be a spacesuit of some sort. The Doctor grinned,
"Hello sweetie," she said, to indicate to her wife which one the Doctor was. River smiled and they both embraced into a kiss.

A/N
One more chapter, an epilogue I think of something in the future. Thanks so much for reading this far and please point out mistakes. Sorry these chapters are all so short.