NTA. My child is allergic to peanuts. She knows to never eat anything that does not belong to her. She also knows to never put anything in her mouth without checking the labels for allergens. At age 3, another parent at a kids bday party held a beautiful big slice of cake with extra frosting in front of my kids nose and said “go ahead and eat it all”. My kid said “no thank you, I have to find out what is in it first because I am allergic to peanuts.” At. Age. Three.

Your boss and his daughter are stupid and malicious. You honestly need to get a consult with an employment attorney. Stop talking about this with your coworkers and get help asap.