Jay007 is right to say you don't know what it will be like until you enter ... and I agree that Sunita would have done better last year for example. Even though they weren't popular out of the house, the likes of Elizabeth and Dean would have been better company for her, and even Brian would have been kinder I think than current inmates.
Bear in mind, even though she is not compatible with the house, C4 must have realised this was a likely scenario; they go through enough psychology checks before entering the house. Of course nothing's infallible, but I bet C4 is enjoying this bit of the experiment - gets lots of publicity! it won't do them any good to have her seen as too positive though, because if she DOES go, and evokes sympathy, it may look bad.
if you watch the group when Sunita's about, they barely look at her. The girls are worst, esp. Adele and Kate. Weirdly, no-one's broken into bitching about her; she's simply not game ... must be giving off a really sad vibe. It looks like she's going to brave it out now anyway ... for the meanwhile.