According to Damon it is supposed to elicit fear. Thing is, we've seen her display a full range of emotions despite this supposed switch anyway- jealousy, vindictiveness, desire, satisfaction, disgust. It's bugging the crap out of me- it's just not consistent. She's acting like a psychopath or a toddler, not like a robot. Which means she only lacks empathy, not all emotion. Really stupid case of tell not show, IMO. :/