I think it was about her getting away from her Villanelle fixation and acquiring another attitude. When she put her hair up really tight to resamble the oriental woman, getting away from having her hair mostly down as Villanelle told her in episode 2 of season 1... Yes, this episode Eve is always playing with her hair, almost like trying to find a comfortable way to use it, and the last scene it looks like she did. In fact, just remembering, when Villanelle compliments her hair, in season 1, Eve is also struggling with how to wear it, in the bathroom of the hospital. In this last scene, she is very secure of what to do with her hair. And when Carolyn talks to hear on the speaker, and to know Eve knew she was there, and still was looking straight ahead... It makes it seem like Eve has found her footing, and Carolyn was right about hiding the postcard - Eve can be a way better agent when she is not fixated in Villanelle.
I thought she said "or treason".
This episode had a good thing I was missing: Villanelle's relationship with food. I loved having it back. The way she savors it.
And Konstantin caring for her... Ok, maybe just protecting his money maker, but either way, he knows her extremely well, to know she would be falling apart like that... Someone said here about her being his biological daughter, maybe it is.
Either way, I just hope he gets to kill her before she kills him.
I liked how he didn't flinch when she spoke of his daughter (whereas last season he wanted to hide his family from her), it seems he is not afraid of her anymore (I think he gave the idea of being afraid of her last season, of what she was capable to do).
This episode was very good, almost season one kind of good.