User blog comment:SilverHexxitFights/How I define characters/@comment-25355798-20140904123514/@comment-22434585-20140904155240

I can see what she did in giving Tris a gun:

In short, while it doesn't match Tris's personality, it does a good job anyway.
 * A futuristic setting: guns are the optimal weapon here.
 * Guns represent (sadly) power; giving the non-powerful Tris a gun shows exactly how helpless she is.