Hey the secret is out... only to Nahar... I think Jiji is not Tara's siter. Maybe she is the daughter of their loyal servent who died and gave Urvashi to this family.
Another possibility, she might have killed someone as she IS a psycho, she is always threatning the family.
OR she must be a child born from another women, maybe from the first marriage, or she might have been switched at the time of birth by someone and Jeesa didnt tell his wife about it.
I dont know what do you guys think? ANy other stories you can come up with???
You can add your twists in here too :D