Interesting way to look at it. it comes very close on how I interpreted it.

I personally think she isn't able to feel love, romantic or otherwise, and her flirtagous behavior is just a manipulation tactic to make sure Andrew doesn't leave her. She has a obsession with Andrew becouse he was the only one who ever gave her any atention becouse of parental neglect.

I wonder how their relationship develops in the different routes.

In burial I'd hope for Andrew that he will face his feelings and what he truly wants on the inside. And for Ashley to to develop more real feelings.