So this MMS fiasco is actually a blessing in disguise for Pragya. Once she proves herself innocent or even if someone else finds the proof on her behalf, she will have every reason to be mad at the Mehras (except Daadi/Daasis) and walk out of the marriage. The best part though is going by BTS, Sarla will support Pragya in this scenario and the only reason Pragya wanted to stay in this marriage was Sarla/BB in the beginning. Now she does not need to worry about BB since Abhi is over with his PuLiya shipping and Sarla, for one, will understand why Pragya would not want to stay in the marriage.
Abhi's Daadi is still a factor for Pragya since she has been very kind and genuinely cares for her but even she will understand if Pragya tells her she does not want to stay with a husband who can't trust her.
So, hopefully Pragya uses this chance to separate herself from the fake marriage AT LEAST temporarily. If not separate, she should make sure she has an upper ground this time in the marriage and Abhi should be the one trying to mend things.
Also, if Pragya does go back to live with Abhi, I hope she talks about the future of the marriage, Tannu issue etc.
Pragya might have some respect for Abhi for saving KB hall, helping with Sarla's heart attack etc. but that's not enough reason to stay in the marriage even after all this.
So, I really hope Pragya takes a firm stand after this MMS stuff sorts out.