Some sort of guide on how we influence Eva's personality would be really nice. Most of the time the choices I make don't have the reaction I expect from her, and even when they do I have a hard time understanding if anything is changing.
In daily dialogues your traits change dialogues mostly (This has been expanded in this update). In the erotic scenes your interactions change her dialogues and behavior during said scenes (This would be expanded in the next patch). A side of that, how you approach Evan's issues also change some dialogues.
There is a ton of dialogues that change already depending on gender, traits and choices, you would noticed this during another playthrough, however, more is coming from each end in the last revision, so, more alternative dialogue would be added~
Edit: I forgot to mention, I'm working on an screen that shows your traits and paths for Evangeline together with H-scene stats, so yeah, something in that aspect is coming~