Sept. 13th, right after return date, Christina tweets (set to private) that she is still on Fiji time and misses paradise.
Speculation is that she might be pre-jury. It is considered very probable that the pre-jury was flown to Fiji, certain in fact if the passenger who saw them on a flight from Samoa to Fiji is reliable.
Christina was not ID'd as part of that group of five. The group was missing one as there are six pre-jurors.
She might fib about Fiji when she meant Samoa, but if she were in the late game, would she lament leaving paradise? Sounds like someone who was on a wonderful vacation.
While not a certain spoiler, this tweet at least raises a question mark for me on her longevity.