It wasn't easy for him to just stand there and watch Ruby put down the life of an innocent girl. She had suffered through a lot and now, even after Sam had managed to save them, the girl that Ruby was possessing was going to have to die. It wasn't Ruby's fault - no, she hadn't chosen this body - but it was still difficult for Sam to witness nonetheless. He kept his eyes trained on the ground, quietly waiting as Ruby dealt with the tortured soul that she was trapped inside that body with. When she finished, Sam met Ruby's gaze wearily. How many more people were going to have to die tonight? Funnily enough, he could have prevented at least a little bit of the death himself if he hadn't gone on his rampage against those demons trying to get in here. Maybe if he hadn't been so angry at the time he would have. Hell, maybe if Sam wasn't so furious with them now he would have. He was still in that state of mine where they had tortured, stolen, and broken what he loved - Sam, in spite of how much he'd later deny it, had been nothing but rage from the moment he had found out that Meg had tricked him with Ruby's body and onward. He had become more animal than man trying to get to Ruby and, for that, the house was painted with the bodies of Ruby's abductors. Sam could only make himself feel less guilty by thinking that those inside had probably been long since dead with beings capable of such evil wearing them.
"Good," Sam said quietly, putting his arm firmly around Ruby's middle as she climbed to her feet. She wasn't entirely stable, which meant that he'd need to support her on the way out. He gripped her carefully and led Ruby from the house, ignoring the mess that he had created as he went. At Ruby's statement, Sam's jaw hardened and his eyes narrowed in a cold sort of resolve. He didn't reply. Ruby knew the answer without him saying anything.
Finding the car, Sam guided Ruby to the side of the trunk and carefully propped her against the car so that she was able to lean against it. "I'll exorcise her. Then you take the body." Sam didn't wait for Ruby to respond. He walked over to the trunk, popped it open, and glared down at Meg viciously. "Your friends are dead. Lucky for you, I'm good on my word. You're going back. But Meg? Don't think for a second that I'm going to forget what you did to us. When I see you again, you're going to suffer a long, painful death. And I'm gonna enjoy it." That said, Sam cast his arm out and focused on dragging Meg out of Ruby's body. She didn't belong there.