I know it's cliché and everyone asks each other this, but are you in therapy? or can you consider going?
That's not an easy thing... We've had people come and go - including core; I am in her place now. I don't know what I'd do if she came back and pushed me out. Makes me dizzy thinking about it.
Can you write the Birthname notes so she knows you're not dreams? Leave her clues? have a journal that everyone writes in so she can see it? We've done that, but it was Core that started it.... after she freaked about the dx.
hope things will be ok, Joshua.