Following Episode 13: Cydney is primarily responsible for the biggest blindside of the game -- voting out Nick, which is the biggest and perhaps only feather in her cap. While Aubry could take credit for that as much as Cydney, it was Cydney who had to make the bigger move by switching sides in order to execute that plan. (Michele also had to switch sides, but she was not as closely aligned with Nick as Cydney was with Scot and Jason.) It is unclear if this big move would earn her enough credit from the jury in a final two pairing with either Tai or Michele, since her outspoken attitude toward several of the jurors might have rubbed some of them the wrong way. She probably has a better chance versus Tai, but all of this depends upon how the last two jurors are eliminated. It will take quite the speech for her to win Scot, Jason, and Nick's votes.
Likelihood of a final two vs. a final three: With Joe removed from the competition on Day 34 and four castaways entering the season finale episode, it is a near certainty that there will be a final two instead of a final three, since a final three would mean only one tribal council for elimination before the final tribal council to vote for the Sole Survivor, which would be a deviation from the traditional format of the season finale episode. Also, there would be a six-day lapse between the previous tribal council (Day 32, Jason's elimination) and the final tribal council for elimination (Day 38), which seems incongruous and unfair to the jurors who would have only attended six tribal councils leading up to the final tribal council to vote for the Sole Survivor.