1.First of all, they showed the negative factor of Mr. Khan and Iam sure that khan will be killed by zara who is none other than our Indira.
2. Secondly, I still feel that shweta's role is negative. CV's are not still showing the negative factor of her bcoz they want to give the shock to us.
3. Iam still confident that she is not that mahaan to sacrifice her life for rishi and indu. May be when zara gets her memory back, she may remember the negative factor of shweta and may throw the light on this topic.
shweta may thought that, zara is Indira and she may have injected some think to her and Thats why she is taking care of Indira's family, bcoz no one wants to doubt her.
Still they have not shown how did Indira die? This is the mystery. If rishi comes to know that shwetha has killed indira, then he is the first person to send the shweta to jail.
So finally, I think that shweta may go to jail.