I always thought it was Meana.

I thought it was interesting to see the contrasts between an American and Indian family..
In the beginning the Das' were disconnected.. Mr. and Mrs. Dad really did behave just like like older siblings. They didn't act like parents or husband and wife.
And when Mr. Kapasi's relationship is revealed, we find out that they don't act like their married either. However, they did act like real parents. They did everything in their means to save their son's life. Mr. and Mrs. Das dreaded doing anything for their kids.. like taking their daughter to the bathroom or painting her nails.

So Mr. Kapasi is longing for companionship, Mrs. Das is looking for someone to confide in, and Mr. Das.. well, he's oblivious? Mr. Kapasi and Mina find their answers in each other, but only Mina really benefits.
After she tells Mr. Kapasi her story (because he was a translator..), she meets back up with her family and we finally see her in a motherly role (helping her son after the monkey incident).
I don't understand how Mr. Kapasis's problems came to a resolution... other than his fantasy world came to and end after the address blew out of Mina's purse.