Instead of joyfully planning their weddings together, my daughters, Hannah and Christine, constantly bickered. I thought it was jealousy—Christine, my stepdaughter, often felt second-best to Hannah, my biological daughter. But I didn’t realize how wrong I was until just days before Hannah’s big day.

Hannah had everything planned: a winter wedding, a dream dress, and excitement in her eyes. Christine, who got engaged first but hadn’t secured a venue, seemed more distant than ever. One night, Christine stormed out after dinner, and minutes later, I discovered Hannah’s wedding dress slashed to pieces—with Christine standing over it in tears. “I swear it wasn’t me,” she cried, and for once, I believed her.

When I gently asked what happened, the truth spilled out. Christine had caught John, Hannah’s fiancé, texting his ex months ago. She confronted him and told him to come clean, but he never did. That night, she’d seen him sneaking out of Hannah’s room—after he destroyed the dress, hoping to delay the wedding without admitting his doubts…