I'll re-post what I posted in another topic in reply to a post you made, Bibbles, where you claimed Nadia was "fake and false" - which you didn't reply to:
She wasn't fake and false at all IMO. She kept a few secrets that where rightly hers to keep, it was none of the other housemates' business. The whole thing about people being "fake and false", in my eyes, is about someone who goes out of their way to act like someone they're not, who holds back for whatever reason... just basically acting completely different to who they actually are. Whether you like Nadia or not, you can not accuse her of holding back her feelings or acting like anybody other than herself.
I can guarantee that every single one of those housemates had at least one secret, no matter how big or small, and they chose to keep it to themselves. Nadia's past isn't exactly something you hear everyday so I can understand why she chose not to tell a bunch of strangers who she had only just met.
If you were in Nadia's situation, would you walk into a house of 11 strangers, as well as millions watching, and reveal your deepest secrets that you hadn't even got over yourself yet? No, I didn't think so.