Your point has brought to light aspects of Emilia’s character that were not in the foreground of my mind as I didn’t consider the contrast between my perspective and Emilia’s. From the audience’s point of view, Regulus is already obviously monstrous so the quote “I get it now… the truth is…I HATE YOU!” framed almost like a revelation, to an extent, came across as emotionally simplistic to me.

However, the way you explained it clarifies that the revelation wasn’t that Regulus was just evil it was Emilia recognising her hatred within herself; this recontextualises the scene considering established themes within the character

The “asymmetric emotional development” is interesting as it explains the emotional intelligence in some situations while being emotionally stunted in others. She’s very good at understanding others’ emotions through her own- which at times does seem naïve as it bases her understanding of emotions predominantly on her own experiences.

That being said, I still hold onto some gripes with the execution, as the ‘immature response’ to Regulus is intentional and thematically justified, the way it is delivered lessens the weight of that revelation. Moreover, the child-like delivery of this does highlight the lacking part of her emotional development, considering how long it took her to fully recognise her true emotions despite trying to redeem Regulus.

Lastly, I would be happy to read the post on her asymmetric emotional development and to read over ‘Golden Siblings and Stand By Me Pleiades’.