For all his heart problems, Baba does seem to have a strong heart. The man ended up having a mild heart attack when Ayesha declared Prachi was the mother of Ritwik. But when he heard Prachi herself declare that she was the mother of Ritwik, he looked pretty healthy (may be shocked but healthy nonetheless) to me. In fact when Suki entered the room he was even standing up and not lying down. I doubt that even if he comes to know Ritwik is Suki son and his grandson, it may not have any adverse impact on his heart (Still not sure whether he knows it or not). The old horse seems strong enough to weather any storm.
But then again all the previous attacks have come when his family was publicly disgraced, be it Suki's elopment or Ayesha's accusations. These happened at parties. So if Suki has not told the whole truth and the entire truth errupts in a party I think that will spell doom for baba, not to mention Suki's marriage. Would Milsi then be able to forgive Prachi for keeping the truth from him? Would that be the end of Michi?
After waiting for the truth to come out eternally, if we get to see that finally Michi break up because of it, that would indeed be the cruelest blow. Wish I knew if this Michi misunderstanding is a temporary break or a permanent one inorder to start off the NP track again after Jai returns from JDJ. Atleast then I can decide whether I'll subject myself to any further torture or quit watching the show!