[@Helo]

Would you, please? I imagine that the two would have been broken up before the knife incident, so probably around episode 4 or 5. So, since Keisha was with Charlie and he and Logan were best buds, how would Logan have felt about Keisha? 

I think we are on the same page when it comes to Charlie's traits. Normal, cool guy with a taste for trouble. That would be why she and everyone that knew Charlie were so surprised when they realized that he was the shooter.