Dean was sitting across the table from River. To his right was Castiel and to River's was Crowley. Vera and Missouri were talking in the kitchen.
"So you're from the future." Dean stated.
"The year 2518." River nodded.
"Where the future Castiel and Crowley worked together to send you back in time."
"Correct."
"Where my car and your space ship told you about Sam's situation."
"And Wash." River nodded again.
"Right. You're dead friend." Dean sighed. "Why you?"
"I'm a psychic. I'm a warrior."
"You said you were in an academy. Were there no others?"
"Not who got away."
"That's not the reason." Dean stated.
"No, it isn't."
"So why you?"
"Because," Crowley spoke up, "She is Sammy boy's soul mate."
"Eh?" Dean glanced at the demon as River flushed. Castiel exhaled before speaking.
"A long time ago, two Angels fell in love. But it was forbidden for them to express this. And so when Lucifer declared war, the Angels were separated. She was a Watcher, so she felt obligated to continue watching Man Kind. He was a Guardian-the lowest ranking of Angel. He'd seen crimes committed against man kind. He wanted to be with the one he loved. So he joined the rebellion." Castiel shook his head. "The cost to the Angels who sided with Lucifer was harsh. They would be reincarnated as humans, over and over again. They led long lives-cursed lives. They were never permitted to be happy for long-only long enough so it could be taken away."
"What's this to do with Sam and River?" Dean asked.
"The Angels were Raziel and Sammael."
Vera's voice entered the room before her. Dean blinked for a moment.
"I thought Sammael was another name for the Devil." He stated.
"The religions screwed up a lot of the story." Vera sat down. "Sammael was tricked, you see. He believed Lucifer was good. Anyway, the trouble is Raziel was just in too much pain away from him. Furthermore she had to watch many of his lives. Angels aren't allowed to directly interfere. Well, she heard Lilith and her allies Azazel and Ruby were plotting against Sammael, to use him to summon Lucifer. Raziel came to me. As a Cherubim, I could approve her request to be born as a Human. When her friends Impala and Serenity found out, they filed requests to be born human as well."
"Rowena, Jean, and Impala." River stated. Vera nodded once as she sighed.
"She'd affected Sammael's life as Samuel Colt. More then Zachariah would have liked. But he couldn't express that. Impala however-her request was denied. So she went anyway, retaining her identity. The trouble was she took a lover-a human-while knowing she was an Angel. She also tried to change Sammael and Raziel's fate." Vera glanced out the window at the car. "As such, this time she had to watch her lover reborn, always close to him but never able to do more then watch over him-and his brother, Sammael once again."
Dean blinked for a minute.
"So in a past life...my car and I..."
"Married." River stated. "She was a Native American."
"Uh huh. You're all insane." Dean stood up as Missouri marched in.
"Is that Disbelief?" She snapped.
"Well, yes!" Dean retorted.
"Then change your point of view."
"I can't get my head that far up my ass!"
Castiel spoke now.
"Dean. You promised Sam you wouldn't try to save him. But you didn't promise not to help someone else save the future."
Dean paused and River new the outcome.
"I'll call Lisa and tell her I'm occupied for a while."
"In the meantime..." Vera turned to River. "You have to remember Rachel."