I was sad that Carley was killed, so after I finished my main playthrough I went back and tried to do this argument differently to see if there's a way to save her. Judging by the results screen on whether or not you abandoned Lily, I had hope that maybe you can persuade her to kill Ben instead of Carley (don't really care for Ben, especially after you learn about how he was the one supplying the bandits). Unfortunately, all the dialogue choices seemed to lead to the same conclusion.
Most Recent Retail Completion: Trials Fusion (XB1)
Most Recent Arcade Completion: The Wolf Among Us: Season Two - Episode Three
Working On: Ryse: Son of Rome, Killer Instinct
Reached 100K on 1/2/14
Achievement: Killer Instinct - Jago Apprentice for 20 GS