HOW IS SHE NOT PUTTING 2 AND 2 TOGETHER BRO

My guess is denial. She's still looking for the man her husband was pretending to be, not considering what she knows about him to be true and what kind of person that would make him. He's is also still under the delusion that she was normal person before she met him and can go back to that life. They're both chasing/protecting the fantasies they had of one another. Neither are ready to break that fantasy yet. That said, I think Wooshin is starting to come to terms with the fact that--whether it's the fantasy or reality of who they both are--they're a perfect match.