So prerna hates Anurag. Quite obviously sooner or later she will know why Anurag did what he did! But even if she knows the truth, how can she come back in his life? They might hug, cry and patch up. But KL still has the clip of her pushing Viraj. If that clip was not eligible to be used for self defense then, it should not be even now. So what will happen that can make this entire blackmail track null and void if Prerna has to unite with Anurag? Also I cant imagine either of AnuPre telling KL that they got the clip deleted , because that will mean they indeed agree they murdered Viraj which is not true.