Dean's first reaction was "You leave Sam out of this," He spat, "This is between you and me." His lip curled into a snarl, he should've killed her when he had the chance. Now countless people were in danger because Dean was thinking about getting a booty call.
Damn it, if he couldn't kill the bastards, there really was no other option then to listen to what the demon had to offer. He really was up shit's creek without a paddle.

Dean tried to think out all of the possible scenarios in his head, and none of them ended well for him or Sam. Then his mind shifted to what would Sam want him to do? And he knew the answer, he would want both of them to get out of this alive.

The elder Winchester could feel the Hellhound's presence now, it was purely the feeling of death. Something bad was going to happen tonight, he knew it.
Dean tried to regain his composure, "What the hell could you possibly want from me?" He knew his attitude wasn't good in times like this, but his baby brother's life was in danger, and he didn't even know it. That was such a demon move to be hiding a full house. She didn't even need the knives, she could kill the whole city with her hellhounds and no one would be the wiser.

The mass of muscle, fur, and mist of the hellhound nearest Dean shoved into the hunter, a growl sounding as it passed. Trying to move herself off the wall, she reached out, wrapping an arm around the invisible beast before her, and using the canine as support. She then proceed to baby the beast, petting, scratching, and praising the dog. "What a good boy you are, Cresil. You're mommy's good boy." she cooed, scratching under the hellhound's chin. She had almost forgotten about Dean, until he nearly began to chew her head off about leaving his brother out of all this.

"Oh yeah, you..." she grumbled, trying to stand up straight, only to grimace as a sharp pain sprang throughout her body from her wound. She watched him in silence as the cogs in his mind turned. He was thinking, and hard. "Don't hurt yourself now." she stated, "Not like your the brains anyways. Isn't that Sammy's job?" Waving the question off, she smiled when Dean asked what she wanted from him. "Many things, if you want to get technical. A Winchester, of all things, could make me rich in hell, but no... All I want is your word that you or your brother won't kill me or my hounds. If you do this for me, I will give you the things you want to hunt in this town on a silver platter. After this, our little deal can be null and void. We ever meet again, you can try your best to 'gank' me. Deal?" she asked, holding out her hand. This wasn't a contract for hell, after all, and a kiss wasn't needed to seal this deal. ~Snip-it from a Supernatural RP between myself and Blacksteel Alchemist on Advanced Scribes.