How badly would her head explode if someone told her about alternate universe fiction? As in, just because the fictional character dies in one story, that doesn't mean the writer can't do what-if stories.

...Wait, never mind, no one tell her. I have horrible visions of soap-opera 'Ha! You thought I was dead, but it was my unmentioned twin brother, instead!' happening in the main series, because, let's face it, she can't detach herself from the fantasy she's built for long enough to understand the idea of alternate canon.