[ Going to a demon for help seemed impossible. It's Castiel's last ditch effort are staying alive. He knows how vulnerable he is as a human. Any angel could pick him off if they wanted. They no longer have the ability to catch him off guard due to their wings being burnt off, but they do have the element of surprise. They've circled people and chosen vessels immediately. He can't see past the vessel any longer. He can't see beyond hers either. It's easy to forget that she could just as easily break him like his brothers and sisters. She held his life in her hands and he was making a very big leap by even bothering to come to her. It's a testament to how far Castiel has truly fallen from his old ways. It makes him ache. ]

I came to the most powerful piece on the chessboard. [ Demons have egos a mile long in his experience. Appealing to that has never hurt. It's always seemed to help with Meg and Crowley. The others have usually been dealt with. ] If you don't wish to help then I can easily leave you to your own devices. [ He didn't want to grovel for help, but he figured she was on the fast track to making him do so. She would do anything to break the angel she had in her possession and he was smart enough to realize that. She wasn't just going to roll over and play protector for him. Certainly not to someone with his reputation.

So far what he's verbally told her has been that he's an angel of the Lord with connections. A former one, but still he has use. When she pulls on his face like that he wants to fight her. He wants to shove her away and expel her from her body, but he can't. ] Because--my name is Castiel. If you're smart--which I believe you are then you already know my use. What I know and who I know could benefit you greatly. Helping me is in your best interests.