Bee stings are fatal only on rare occasion. Those with a severe allergy can be sent into anaphylactic shock. Swelling. Nausea. Vomiting. Shortness of breath. Confusion. A drop in blood pressure. Unconsciousness.
When Winifred’s body is found, it is far too late for medical attention to be of any use.
She was taken by a single sting above the heart.