Title: The Companion

Author: Nemainofthewater

Warning: Spoilers for Supernatural season 4 and Doctor Who up to season AU.

Disclaimer: I don't own anything. It belongs to the BBC and the CW network.

Alternate Ending

"Donna, what are you talking about?" asked the Doctor frantically.

"Yes," said Donna firmly. "And Doctor…"

"Stop," interrupted Amelia quietly. "Don't do it Donna. It isn't worth it."

"I have to," Donna replied. "It would save Jimmy," She continued, "Don't you want that?"

"Of course I do, but this isn't the way to do it. I spoke to Jimmy. He wants to do this. Don't sacrifice yourself for him."

"Donna? What's going on?" asked the Doctor quietly.

" Don't you see Doctor? I can help Jimmy. You could travel with him again. And I would make a difference. I wouldn't just be a temp anymore." Donna replied, a fervor slipping into her voice.

"Oh Donna. You were never just a temp. You're amazing and I need you. I want to save Jimmy, but I don't want to sacrifice you to do it."

"I'll stay with you Doctor. I'm sorry Castiel. I changed my mind. The answer is no." And with that she turned around to face Castiel. Or at least the space where he had once been, now empty.

"Come on Amelia. Donna." The Doctor started over to the big blue box, followed closely by Amelia.

Donna lingered behind, and whispered into the wind "Thank you. And good luck."