...empathy *requires* understanding. It is literally the understanding of another's feelings. You can't accept the impossibility of understanding and then understand. Empathy is not the word you're looking for. Neither is sympathy.
And Sera's code may be personal, but that doesn't negate the fact that she doesn't care about feelings on an individual basis unless she really likes someone or is scared of them (in the case of, say, Leliana in the prank quest). It is not empathetic to dump a bucket on Josephine's head, or screw around with Cullen's stuff. It's rude and shows that she either has no understanding of their personal feelings and lives or that she doesn't care.
Wrong. Did it ever occur to you or others here that maybe Sera gives the "appearance" of not caring, that she is intending to be viewed as someone who doesn't understand or doesn't care, that's the way share cares? That applies to all kinds of characters and people by the way, from all sorts of media, as well as reality.
You guys are showing your emotional inflexibility and simplicity, if someone says "I like you and I understand you," that's empathy, but if someone goes "you know what? I don't really care, lets make a joke!" this person is ignornant, etc. That's the only narrow-mindedness I see here, because that is not how it works. Sycophantic yes men and women are not the people I would call rich an empathy, they are ultimately also more untrustworthy because they have a herd mentality.
Why are you guys all here posting and reacting to her character? She's had the desired effect, which is to make an impact, look at the effect of her actions, it's to drag people away from their cherished world of norms and ideals and into their personal realm. A lot of people here probably prefer to be in the world of norms forever, and that's why they are reacting negatively. She's making you actually feel something. Blackwall or whoever doesn't make you feel anything, he does nothing for you, just because your reaction seems negative to you doesn't mean it actually is negative.
I should add that I'm not necessarily infatuated with this character, but I would definitely have her in the party for being more interesting and fun than many other comparatively more dull characters.