I was in the dark with one hand on my blade looking around trying to find Jace. he was being held prisoner for something he didn't do and we all know it we both had been to hell and back more than 6 times so I would know if had killed a human for the fun of it. we are the best shadow hunters there is. Our job is to protect people not kill them.
clary was told to stay at base but she just couldn't. clary and Jace were the best demon hunters they volunteered she wasn't going to sit around they were and they were in love they would lay down there life if it means to save the other.