When my brother announced he was marrying Nancy — the girl who made my childhood miserable — my heart sank. Nancy wasn’t a physical bully, but her words cut deep. She humiliated me for years while maintaining her “angelic” image to adults. I eventually left town, built a new life, and rarely thought of her again… until she became my future sister-in-law. At the engagement party, her sugary insults returned, reminding me that some people never change.

One night, I remembered her one weakness from high school: butterflies. She had an intense, irrational fear of them. That gave me the idea for the “perfect wedding gift.” I ordered a beautifully wrapped box filled with 200 live butterflies, scheduled to be delivered the night she returned from the wedding. The delivery person was instructed to insist they open it indoors — and to film everything.

At the wedding, Nancy was radiant, basking in attention and dropping backhanded compliments my way. Near the end of the night, she loudly pointed out that I hadn’t given her a gift. I smiled and told her, “It’s waiting for you at home.” Later, when she opened the box, the butterflies burst into the room. Her scream was instant. She flailed, sobbed, and panicked as the harmless creatures filled the air, her fear overwhelming her.

The next morning, my brother furiously called, accusing me of traumatizing his wife. I calmly reminded him of the years she’d traumatized me. He fell silent when I mentioned the video of her screaming — a perfect poetic justice. After that day, Nancy never contacted me again. And for the first time in years, I slept peacefully.