I agree with Payal and Leaves. This is Reva's plan to get ridoff Suman and rule the mansion. Finally everyone including Sugni when she returns, will see Reva's true colours. I hope this is the angle the CVs are taking so that TVS can finally get some justice. Even his mother needs to feel some shame for ignoring her son's plight.
Definitely though, Reva would make a better villain as Suman was only full of talks. Reva will actually put action to words and make this story better.