Exactly the same for my SO. For the longest time she was sort of in the background while out, not saying much, trying to not draw attention to herself, but also never knowing whether she "passed as a GG" or not. I suspect that many times, like others in this thread, she took an absence of remarks or notice as "passing". But when she decided to go to the next step and have human interactions, she had to come to terms with the fact that people knew that she was not a GG. In a way, she had to redefine a few things for herself but then I'm guessing (I don't live in her skin), that she became satisfied with others respecting her gender presentation.
So I look at it as a shift from fantasy to reality, but a happy reality for my SO nonetheless. The people who interact with her (and us) are friendly.