This is with regard to the post, 'Doubts..'. Well, some of us were kinda confused whether Shefali know about Mansen's hand in the blast ar Arjun's factory. Well, I checked my updates--I have them saved in my PC and went through them--and I discovered that Shefali does know the truth..
On the episode, dated November 1, 2005, this is what I wrote in the update: "Mansen tells Khushal that if the CID officer catches Satpal, everyone would know that they were responsible for the blast in Arjun's factory. Shefali overhears this and is shocked."
And on the episode aired on November 3, this is what I wrote in the update: "Shefali tells Mansen that she knows about Satpal and their hand in the blast in Arjun's factory. Mansen is shocked. Shefali tells him that she wants to make a deal with him-- that she wouldn't tell anyone about it but in return, she wants a divorce from Yuvraj."
So, she probably is keeping silent about this to prevent further chaos at home and to keep the family united..