The big changing moment in Ians life is when she witnessed a gang shooting with her mother and then watched her mother get beaten and threatened to not talk "or else" they moved in short order after that. This caused her to have a bit of a twisted realization of "People are horrible and need to be forced to listen or behave or else there will be unquelled chaos everywhere". So she took it upon herself to enact this twisted sense of order in her everyday passings.
Viewing post in Our Life: Now & Forever comments
See that’s the opposite of how Kathryne was. She and her mother were held hostage and had a gun put to her head when she was 6. The police then took the shot and killed to gunman hold her. This scarred her and now she thinks everyone she doesn’t know is bad and is terrified of them.
Long story short, our mcs probably shouldn’t be left alone in the same room. Or maybe Ian would like KitKat because she’d be to scared to act out of line. :P