Haleivi- that is a TERRIBLE thing to say. People need sympathy, not Assurance. She KNOWS it’s common and that she’ll have more children.
Please please don’t talk about her future children!
Just tell her how hard it must be, ask her if she’s feeling better. Offer if you can be of any help.
Maybe even buy her a nice book to read while she rests.
It’s not a tragedy, but it isn’t easy.