I think so too. I think that Sushma is this time trying to work from a position of strength, and going to instead of working, just be a stay-at-home wife and see how Brij takes it. Not too much housework, no more being his servant, but seeing whether he takes responsibility towards running the house or letting it rot, now that he can't manipulate her. Once she finds out a resumption of his behavior, she probably has a plan to cripple him before leaving him.
Given what she knows about Brij, which is even uglier than what even Jyoti knows, she is trying to trap him into exposing what he did to everyone, rather than her having to admit it and looking like a victim.
And some of what she said at home may just as well have been acting.