"I wish I’d a knowed more people. I would a loved ‘em all. If I’d knowed more, I would a loved more." (2.15.336)
Why couldn’t Pilate love more people? Where did her love come from? She ends her life thinking about love, and we never see her going crazy over any kind of love. If Guitar kills her out of love, then we have some pretty conflicting kinds of love on our hands.