As long as RB is with her, she won't realise anything.
All she thinks and says is she loves anurag and please give me a promise you won't hurt him.
I feel that's because she is still in that fairy tale world where she thinks that only love can make a relationship work successfully.
So to have a reality check, first bajaj needs to be out of BB (divorce or no divorce). We AL know how basus are, how they treat this woman.
There is a saying, you won't realise the importance of a person as long as he is with you.
Let her face everything alone, may be only then just may be, her eyes will open and of course I don't know who will take that credit (komo or anyone else), but mark my words, I know ekta so well.
Even if anurag will believe it's his child initially someone will produce a fake DNA report (yes just like komo did in season one), anurag will be shattered and basus will throw her out.
Thus she will come back Nd RB will accept her.
From their on, we will see the real development of prerish.
We need to have lots of patience for PreRish and I'm all OK with this, because for me, this marriage is started on the basis of a deal and I really don't want prerish love story right now.
She has to open her eyes and that reality check can only happen when RB leaves her right now at BB.
I can write another long essay about Prerna, if anyone is interested.