I know it's random to bring this thread back nearly SEVEN years later, but I managed to come across James and Stuart's games on YouTube while CJ was on this wings, i skipped to the part where CJ opened her box and she did seem rather odd to me.
She got no close-ups or hardly any camera exposure at all, apart from her box opening. I did take notice of when she opened her boxes, and i didn't like the way she sighed and then said "I hope it's blue" in an annoyed way before revealing the £250k.
I also remember watching Danielle's game on the now-defunct ilovedealornodeal.co.uk site, which was her last show before she was thrown off the next day, i saw CJ a couple of times when Helen and Abed (who stood either side of her, Abed was the newbie and Helen joined the day before) opened their boxes and i think CJ did kind of look bored and had a look of "I don't want to be here" on her face!