I'd hardly say that's the most likely outcome. It's certainly a possibility, but it's just as likely that they don't share a body. Just because it's a popular theory doesn't mean it's any more likely to happen. But if they do share a body, that certainly sounds plausible.
And with her fearing sleep so much, I just figured she knew there would only be horrorterrors or whatever waiting for her. Or something like that.
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http://i50.tinypic.com/23qx00.jpg
"First time I got punched in the face, I was like "oh no", then I was like "this is a story"."