Yeah i agree. It fascinates me though. So many of her statements could be read more than one way after knowing the trick.
I dunno if it even matters to the story, but all the makeup in the world wouldnt hide your husband's identity from you, right? Not someone you knew for years. And she's the only one who saw his hand fresh after the 'surgery'. I like to wonder about what exactly she suspected, and what she meant when she said she couldn't live this way.
I look for clues every time. Still not sure (or if you're supposed to know) which person loved her or if either of them know who the OG was.
Having had a partner who gaslit and had basically a personality disorder, I could absolutely see someone getting driven to do what she did. You start to doubt your own ability to distinguish reality, to be able to trust yourself or anyone else. Constant fear and anxiety will make anyone go a little nuts