Sal watched her lower the arm that held the whip, but he knew Eileen was still a threat. Anyone could grab a knife and run outside, but she grabbed a whip, which meant she was profficient with it. Until that whip was out of her grip, he knew that he himself was at risk.
"So glad we're making this easy on me." Sal said, stalking out of the woods without a hostage. Because Eileen was close enough, he grabbed the arm that held the whip and pressed his knife against her throat. "I have a letter for your friends. Congratulations, Eileen, you're my hostage!"