If on one hand you are willing to adopt a baby with an unknown past - based SOLELY on the health and looks of the baby now - The same understanding SHUD be extended to the family too.
Why is it so difficult to assume that if there is a discrepancy - that Alok and CM are hiding from Ira - they must be having a DAMN GOOD REASON for having done so.
Anandi is not even a year old here. Ira and Shiv's feelings matter a lot lot more. Am glad they showed her trying to tell herself that she will stay out of it - then why voice her confusion to Meenu ? That means - her resolve to put this behind her was too lame coz her curiousity just won't settle down !!
This is not in keeping with the kind of person she has been shown so far. You have to have faith and trust in the grownups of the family and in their reasons for their decisions. If Alok and CM have indeed something to do with this - and Ira suspects something - she(IRA) wud be fully justified in asking for an explanation - but Anandi has no business being THIS bothered and distracted by something she doesn't even know.
Shiv is the accepted and loved bada beta of the house. And she is the badi bahu. Be happy with that and focus on what your husband needs - some cute cootchy coo time - bechara he is the most neglected in all her pursuits coz she has time for every thing except him.