Food Allergies Treatment

We are travelling to Croatia and need a very accurate translation card to hand to waiters/chefs/shops to let them know that our daughter has a life-threatening allergy to nuts, particularly peanuts. We need to emphasise that it needs to be taken seriously. We also need to know how to ask for medical attention and an ambulance. Advice on any national dishes to avoid would also be very gratefuly received…Thank you!