Well, it takes approximately 2 years for a woman's body to fully recover from pregnancy and childbirth. I think that's why our bodies, on average, a re designed to naturally space children about this far with breastfeeding. Anyway, that said, every woman is not the same and there are many variables. If her body was not ready, chances are she would not have gotten pregnant in the first place or wouldn't have made it this far. I've known many women who get pregnant 2 months after a baby and do okay.