Secondly, why should she not have said what she does with Anish, is she hiding?
If she felt angry that Birju doubted her, then even she doubted Birju before he knew about her polio, Was Birju angry? Instead he became sad that baby could not say a simple fact to him.
I don't I may not be right, but I feel sorry for Birju. Anish is still cute because he is neutral and straight forward.