"Get away from him," Sam growled at Lilith. He could feel his rage taking control now and he stood up, his full 6'4" frame towering over his grandmother and brother. Lilith, distracted by her desire for Dean, looked up at Sam, her forehead wrinkling in confusion. She was literally drunk from desire, still clutching the amulet in her hand. It provided enough time for Sam to regain control, to establish his power over Lilith. Whatever restraints she had forced upon him were now broken.
"I said get away from him, now!" Sam brought his hand up and felt the energy pulsate and release, pushing Lilith back until she was forced to let go of the amulet and Dean was out of her reach. The demon stood wide-eyed as her grandson stepped towards her, his hand still up and ready to attack again.
"Your power has grown, grandson. I am impressed." Lilith spoke slowly, steeling herself as she calculated her next move. She had underestimated Sam. She had thought the power he had demonstrated back in Salem had been generated by the amulet. Now, she realized that he clearly possessed his grandfather's formidable abilities. He just can't quite control them yet, though. That will be his undoing.
Sam let out a mirthless laugh, his eyes growing darker, almost black. "That's right, bitch. I'm just like him. Every day I get stronger. I'll be stronger than you very soon. But I won't be joining your league of demon freaks; sorry, granny." Sam tilted his head and smiled, his eyes no longer held any white and his voice had subtly deepened.
Lilith felt her anger grow. No one had ever challenged her, especially not her own blood. "If you think for one moment your fledgling powers can even begin to stop me, you are too stupid to be claimed by this family. If you attack me, you will pay a very high price."
Sam pressed on, determined to banish Lilith, even if only temporarily. "Are you forgetting that only a few days ago I sent you and your son to Hell? I can do it again."
Lilith laughed loudly. "Oh, Sam, sending us to Hell is not a punishment! It's simply a minor inconvenience, or have you forgotten? We live there. Hello? Give it up. I will have your brother; in fact, that yummy process has already begun. You will follow me, or he will die. So by all means, practice those inherited skills. You will need them for all the jobs you will be doing for the family business."
Sam stared at Lilith defiantly, his inhuman rage spurring him to attack. But the unexpected arrival by a group of three hunters into the Roadhouse caught him off guard. The hunters quickly took in the scene, seeing Ellen and Dean down, they instantly recognized Lilith and brandished their weapons. But as quick as they were, as skilled as they were, their effort was futile. Sam could only watch in horror as, with one simple pulse from her hand, Lilith vaporized the hunters where they stood. She then casually turned her attention back to her grandson.
"Now, Sam, until your abilities are that advanced, I'd suggest you do as you're told. I have big plans for your brother, and I will be extremely pissed if he suffers the same fate by my hand because you are not cooperating. Do I make myself clear?"
Sam looked down at his brother, who was beginning to stir. He felt himself weaken and his eyes returned to their normal hazel hue as he wondered just how much Lilith had done to Dean already. He had to stay in control if he was going to get the two of them out of this. He nodded quickly and shut his eyes against the headache that had returned. I'm so sorry, Dean.