Nandini is not blaming Meera alone. she is angry on Ani for cheating her. at the same time she can't do anything more than crying because Ani is not alive now.
Now Nandini has only one option to question Meera. Nandini clearly asking Meera why she hide the truth. others were creating worse situation for Meera. but Nandini is sticking to only one question about her hiding truth.
Meera is also not a girl to destroy others happiness. she kept quiet seeing Nandini's love and trust on Ani. Meera doesn't want Nandini to think badly about Ani,
Original fault is on Ani who played with two girls life.