[kaphc]

From watching Sissy on E4, I get the impression that she has watched all or most of the previous series of Big Brother. They were having a discussion about tasks and she was mentioning some of the ones that had been done in the past.

She is therefore very aware of how Big Brother works and that probably makes her more paranoid. Either that or she is very clever and the anxiety is a plan to win the sympathy vote.

It's interesting that she comes across as a very tough cookie, but is quite fragile underneath.