This misfit marriage is the final nail in the coffin..
Pata ni koi redemption dikhayenge ya nhi or will use sai to white wash
I don't except a good closure from these people. They've a habit of closing tracks abruptly.
So, I'm going to guess, when sai finds out that virat and pakhi aren't in love and married due to circumferences to adopt vinu who also happens to be her real son. Then, she'll melt.
She shouldn't, but we know vankar.