YTA because you shouldn't mess with allergens, EVER. Allergic reactions will rapidly change in severity from "mildly annoying" to life-threatening within minutes, and there is no way to predict when that change occurs. It's the body over-reacting to something in a run-away fashion.

You can easily kill people like this, AND it's a major crime in most civilized places, so don't do it ever again.

I recommend, instead, to get your pretzels and lock them inside a container she can't get access to. Go to a department store and get a heavy duty lockable container that can't just be pried open. If you have a footlocker or wardrobe or even a dresser, place a padlock on it. She can try explaining to your mom why she destroyed furniture to get at a bag of pretzels.