May darling lovely post dear an very valid questions indeed....
Khusboo...hummm....I think the reason she hates Khanak so is that she thinks that all is Khanaks fault and she on purpose got married to Shan and hurt her sister....but then sometimes when one is angry...one does not think properly...thus ...even though she may agree with her father now..she was laways an advocate fro Natahsa Shan marriage to her father and as a older sister can't see her sister so hurt by all that has taken place adn that too ...getting a shocker on her own marriage day...thus all her hate is diverted towards Khanak..the unwanted one...
She will be rude and obinoxious to Khanak as long as she is in Shantanus's life and Natasha keeps crying etc....If she sees her sister does not car and has moved on etc...I really think she will stop ..being rude and obinoxious to Khanak...her anger all of it stems from her love for her sister....
As for her turning outright negative..nah I don't see that happening at all...hope not...shes not a negative character..just snobbish, proud, to aware of her social statues etc..which does not make a person a villan..but just ..slightly unhuman...but not a villan...
As for her siding with her father ...she may do that...depending on the situation for sure..adn looks like she will ...a the situation seems to be detorating in front of her eyes with Shan Khanak sharing a room, Shan going after Khanak and not her sister, etc all were points in favour of her father and against Shan and especially Khanak....
She is only bearing Khanak...bcause of the whole business deal and the divorce thing..but that does not mean she has to be kind to the person she solely holds responsible for her sisters misery and continued unhappiness....
Heehehe looks liek I blabbered too much...
As for Akshay...hum..his expression left us all confused...wa he like Not again...Shan, Natasha and Khanak...or it could even be I really don't ned to be part of this whole what ever....