Tanu - How far she go? And how much Dramatic Action is being driven by her?

While Purab has been the Plot Driver for undoing or Abhi and Aliya's applecart, Tanu is the Plot Driver for undoing of Pragya's apple cart. After all Abhigya marriage had only two selfish motives from Abhi and Pragya:

1. Aliya's marriage with Purab for Abhi. He would not forgive anyone who hampered this result.
2. Sarla's Happiness in keeping Abhigya marriage in tact for Pragya. She would not forgive anyone who revealed the truth about her faking marriage.

Purab started the meltdown with him running away from Aliya's wedding. It could not have necessarily led to bursting the balloon of happiness for Sarla. Ofcourse Jolt to Sarla's health had to be as severe as Jolt to Aliya has been. Aliya, the safe and sound girl has now come off as unhinged person bordering on becoming a psychopath. Such is the detriment caused to her mental state. Now Sarla has to be sent on the same path of pain. Some kind of detriment.

While Abhi's desire had been punctured by Pragya's trusted person Purab, it has made Abhi target Pragya as cause of his fall. Abhi has hit Purab and taking his vengeance on Pragya. [Lot of drama to unfold and I cannot speculate beyond this.]

Likewise, it naturally follows that Pragya's desire has to be punctured by Abhi's trusted person so that Pragya can target Abhi for her downfall. [Per the spoilers, Tanu will be slapped by Pragya and beyond that we do not know what's gonna happen.]

A lot has already been discussed about Purab's actions, because his action was a trumpeting heralding action. He falls on the good side for Misunderstanding revelation that is needed as Relief for everyone, who are in dire need of it. However, Tanu has not been discussed, as her actions starting earlier than to Purab's have been overlooked with us thinking of her only as a pest that can be ignored or taken in due course. However, she has now become a pest that has completely ravaged the crop. It is because of her that Purab has ran away. If Purab had not been keeping an eye on Aliya and Tanu was always not there instigating Aliya with her insecurities, Aliya would not have been plotting right in the middle of marriage celebrations for her. To cut short, Purab listened to Aliya and Tanu discussing throwing out Pragya, then he decided to run. So the starter of the action is actually Tanu. She was never quiet and infact like Sarla and her incessant stressing, Tanu too is responsible for the whole Faking Fiasco to fall apart with her insecurities. 

I had written in my EP 102 review about Tanu as the New Medusa.

Tatter 2 Tanu - She is the new Medusa, Suddenly she has grown snakes in her head and is plotting heavily for her own benefit, she just wants to have Pragya kicked out of Abhi's life so that she gets married to Abhi. 

Beginning of Episode 93, August 21st Episode, Tanu has turned into Plotter, actually becoming successful in seeing the expected results

First she wanted Abhi back post the Accident Case short estrangement between them. She plotted against Arora family and used Puneet. Puneet got beaten up. But there was plenty much for Sarla to see stressing signs. The drama actually became unbearable for viewers from that point onwards, as it was gross injustice being spewed with Abhigya losing their charm as their characters go down the drain with each holding the selfish motive to keep the faking marriage intact while Puneet gets beaten up badly for a plotting for which Tanu and Aliya were responsible to start with, but Tanu changing it to her advantage (to get closer to Abhi) and thus jeopardizing Aliya, Abhi and Pragya's motives. All three scramble to hide what they have to.

Then we have wedding cheering with Aliya about how Pragya would be thrown out and we have Purab bolting from there. And here comes the most interesting plotting twist by the brainless Tanu but growing snakes over her head. Without any empathy, she thinks about her advantage and decides to hide the letter, let Pragya take the blame, and further creates ammunition for Abhi to leave Pragya, by manipulating Abhi to believe that Purab and Pragya planned the running away. This was until Sep 5th drama.

For some inexplicable reason, Abhi has brought Pragya home. I was confused myself like Aliya and Tanu, why would Abhi bring Pragya back to Mehra Mansion. So Tanu has to continue plotting so that Pragya not only is thrown out of the house, Abhigya marriage is ended. That is Tanu's gameplan now.

So, I guess, it is time to watch Tanu now.