I find it hard to believe that she has split personality, because usually you don't remember what the split personality has done, but when Kanya/Natasha threw juice on Ranbir, she remembers it!
Also, why don't the news channels have any picture of Natasha??? If Kanya didn't know she was Natasha, why would she hide her face? She doesn't want anyone seeing her, because she doesn''t want them to know that she (Kanya) is Natasha!
Another thing is that, in last epi, when Ranbir was forcing her to dance, and she saw the fire, if she had split personality she would change straight away, but instead she said she's getting dizzy and needs the bathroom, so she could run away
What im trying to say is that, when you have split personality, u dont know anything abt the other side of u and u cant control it, but doesn't Kanya seem more in control of what she's doing?:S
Hope u understand what I mean... What do u think???