What is Ameesha's Problem???

Does any one what is Ameesha's problem?? Why does she hate Dev? Why does she want him dead??

PS: Any other reason then "Of course story writer could not think of any other idea......"

Haha, u know what i think it could be A: Ameesha had once loved Dev but she couldnt marry him because he doesnt love her or whatever reason and so she married Veer. But now when she saw that Dev loves kajjal and Kaajjal also loves him and kaajjal is far more simple middle class larki as she says she got veeery jealouse so she decided if she cant have dev no one can and decided to revenge on him by kiling him.

Or it could be B: Since dev is the youngest son, and he gets all the pyaar and attention of all the sons, ameesha is jealous that Devs bride will also get more attention instead of ameesha so she wants to kill dev so Ameesha and veer will be the yongest son and they get more attention B/c like we all know AMeesha is PHSYCO!