I have a different view here. If channel kept silent after knowing all this what will happen. When Rashmi goes out she will happily go into the trap of Arhaan and spoils her life more.
If Rashmi knows about this after coming out of house, Rashmi will be vulnerable and Arhaan has more chances to manipulate the words and make her believe everything is rumours. And chances of Rashmi falling is more as she is in love with him.
If Arhaan is exposed like this and rashmi stays away from Arhaan for few days, she can come out of her vulnerable stage and she will be able to take proper decision against arhaan.
So jyo hotha hain acha kaliya hotha hain. About circus in WKV on her life. Come on guys actors life is like open book to media. They like to dig more and post without caring for their privacy so no big deal. Now or later news will come out about her and media will publish it anyway...
Sorry if you people felt my post insensitive but i want Rashmi to stay in BB for some time away from Arhaan and outside world. Just wish devo comes into BB house. She is the only genuine friend of her.