if your child has a life threatening allergy, and you take the time to discuss it with whoever is caring for her, and to ensure everyone knows it is serious, and then they serve something that could have made her very ill or worse... it is unforgivable, IMO
sometimes, people just don;t get how serious certain allergies can be.. that yes, someone touching you with fingers they have handled nuts with , could give you a reaction.
i think sometimes people get confused between true allergy and intolerance.
i would go and see them in person.
and not send her again
am glad it was not more serious