Opening scene is Shiva and Raavi fighting in their room and Shweta listening to the entire thing and smirking and feeling happy.
Shweta' s plan is to create situations for Raavi to be humiliated by everyone, so Raavi thinks that only Shweta is her wellwisher.
That's why Raavi came in support of Shweta when Rishita wanted to show the CCTV footage and Raavi was against it.
If Shweta wants to comeback, she might either use BhabiMa or Raavi to enter the house. If she uses Raavi, then Suman will make her life even more miserable than it is already.
I really wish Raavi never entertains Shweta again in her life even if she comes back to Kandya Niwas.
BTW, Shweta created the MU between Shiva-Suman and Raavi also never came out. Raavi is still going to be treated like a piece of crap even if Shweta's truth is out because somewhere Suman is suspicious that Raavi is helping Shweta.