Yeah Noa is never going to become healthy, from the beginning of their relationship, spanning 60 or so chapters, the only thing that changed is that she stopped crying. I think the biggest loss for me is that we now almost never see Noa in her WORK MODE which made her seem like an at least...
You're reading too deeply into it man.
(Image below first to show that in fact, this is a dating sim and that the mangaka is breaking video game rules so hareta isn't just robotic)