Someone who has never been trained with guns getting a gun on short notice is an accident in waiting. The time here in the game is too short for Edwin to become even barely proficient.
In addition we have knife fighters in the game, e.g. August. It might surprise you, but indoors (and in many cases outdoors too) a gun wielder has to be a really fast drawer to prevent a knife fighter from gutting him.
Already mentioned an imaginated scene with Vicki and Sophia several times. Even our eccentric doctor introduced as our hero´s girlfriend would go over better than anything with Kathleen.
This is the moment where I dropped my PC bandwagon "I can fix her". Yes, I'm too blind in hope that I can find snow in a desert when all are laughing at me. Anyway, I just hope it is not too late to have a breakup with her. I mean, look at her eyes. Pure Evilness. Kudos to devs.