I don't understand

Hey can anyone plz tell me what's going on cuz i missed a few...okay a lot of episodes. So my questions are who is Urvashi and what does she want to do. And if they could just include a brief recount of all that has happened since Urvashi came into the house then I would be really grateful to them. Thanks.

urvashi is tara,s sister.she is a college lecturer.

Urvashi is Tara's elder sister, who is staying with Tara and the rest (supposed to have been transferred). She is divorced and seeing Tara's happiness is pretty much jealous and so is on a campaign to have all that Tara has to herself...which includes Tara's husband! She uses Tara's inability to have children to her advantage and intelligently brainwashes Tara to have child through a surrogate mother, and cunningly offers herself for that position. So in short, as of now, she is married to Brijesh and she tells that she will be the surrogate mother and leave as soon as she has the child, but she actually wants to have Brijesh and all the happiness that Tara has, to herself...In the process, she alienates Tara and Brijesh from Saloni and Nahar and is instrumental in driving them out of their ancestral house by falsely accusing them of wrong-doings and in general creating a wall of differences between the two brothers.. (she did this bcos Saloni and Nahar kind of were getting clued in on her evil intentions)

Now she is in the process of getting rid of Tara....(maybe)and trying to get closer to Brijesh, but she is till date unsuccessful..

Hope this helps.