A baby cries for Lev

My new daughter Liana is 7 weeks old. Like any baby she does a decent amount of crying. Rebecca read that a baby is often more fussy in their first year if their mother was depressed during pregnancy. So when Liana cries, I imagine that she is grieving for her lost brother. I almost envy her, as she is crying in a way I cannot, with single-minded focus and utter abandon.