Watching the edited highlights I can't imagine Nadia being put in anymore negative light than she has been already. Yesterday evening's show, for example, consisted of her 'best bits' laughing hysterically after farting, getting agitated and deliberately awkward at being weighed and then shouting and screaming on the porch for no particular reason (her endearing qualities, apparantly
).
I agree partly that C4 might edit the programme to manipulate the voting, but for this series I blame the core voters at home who view entertaining housemates as "baddies" and quiet hosuemates as "goodies" which has been a trend since series 1.