Yes, may be that's the reason. She thought of revealing it before Jas does.
It's okay. She might be feeling light now as she was literally blackmailed for this and it's a very sensitive issue.
I know in the house, people get lost and dont think rationally. But ruby should at least realise that this is being telecast and it's a personal matter. I hope Abhinav knows she would do this or he at least doesnt mind orhweise divorce pakka.