I don’t allow meat in my house, and my 15-year-old stepdaughter recently accused me of imposing my vegan lifestyle on her. I told her, ‘My house, my rules! Stay at your mom’s if you’re unhappy!’ My husband stayed silent.

That night, I woke at 2 a.m. to hear him screaming from our 7-year-old son’s room. I rushed in and froze—my son was on the floor, covered in chocolate, pale, and sick. Beside him was a chocolate cake with peanuts. He’s severely allergic, and we always keep peanuts out of the house. Shockingly, my stepdaughter had given him the cake on purpose to ‘teach us a lesson.’ She had already left by the time I searched for her.

I used an EpiPen, and thankfully, my son began to recover after a few hours. I told my husband I never want to see his daughter again. He insists she’s just a teenager who didn’t grasp the seriousness of her actions and wants me to forgive her. I can’t bring myself to do it. What should I do?