If strong suspicions were voiced in the house about Nadia don't you think some people at Channel 4 would have had suspicions as well? Attempting to hide it would have got Nadia nowhere. Also I remember earlier on in the house on the sofa when Nadia and several others sat together, Stuart Marco and Daniel talking in great detail on s*x operations. Nadia looked extremely uncomfortable as Daniel with great glee went into elaborate detail. On the highlights it showed Nadia weeping in the toilet immediately afterwards, whether this was connected to the conversation or the lack of cigarettes at the time wasn't obvious, but the editing made it's own suggestion.
Becki is in a position were she can't really stop them nominating her the first week she is up. Of course you know the housemates will be nice to her face (probably), but they will bitch away from her. Of course they will see her as a threat to winning. They may feel aggrieved she has been in effect exempt from nominations for the first 5 weeks (or whatever it is). This is fortunate for Michelle who had one week free from nominations and this will help take the limelight off her. But the house was stagnating, with arguably only two women left it needed another (reminiscent of last year). It Becki can win the first time she is up, she may stand a chance of surviving and building a fan base. In the meantime her best hope is partly to help build that support by getting on well with everyone for future nominations (if she more than one potential future nomination), but mainly to get on with those she considers the most popular on the outside - so that those fans don't vote against her on next weeks eviction. It's a tall order but it's about all she can do to keep in.
I remember reading on another thread (from a moderator) that we are not allowed to question whether Nadia can be considered a woman or not because Nadia has taken so much trouble (and money I suppose) to be transformed. But Nadia has said s/he can't have babies, so does Nadia have a womb, ovaries, or a menstrual cycle?