5 years after our divorce, my ex mocked my infertility at a luxury wedding while his new partner stood beside him smiling, clearly enjoying my discomfort. I refused to react—until a little girl suddenly ran toward me and shouted, “Mommy!” In that instant, his partner’s smile vanished and her face turned pale with fear.

I watched in slow motion as my daughter pulled out a worn, repeatedly folded photograph that she carried everywhere. It was a hospital picture. A young woman in a hospital gown, looking terrified but holding a newborn baby, with a young man standing right beside her, touching the baby’s tiny hand.