Maybe she wanted to say that virat wanted a baby girl with sai. Yes,it's true . We saw his dream wish to get a daughter as his heir on previous diwali.
Why do you think he wanted a child with her badly?!! The child will tie her to him. Extra knot. In the hospital before surrogacy kaand pakhi makes him vulnerable by Saying the same. Will you let go of this opportunity to make your bond with sai more stronger!? she hits him right where he is weak. :)
I think virat chavan has pea size brain. P knows that his weakness is sai and or anything related to her. He becomes vulnerable. So p takes advantage of his stupid brain. Do you think virat still has a soft corner for sai?