Peetster

There are four categories: Who, What, Where and Why. Some will be easy, some not. I have as many as six clues to help you along, which I'll supply as needed.

Please limit yourself to one guess, and another guess for each clue I supply. No questions asking for help or hints are allowed. Partially correct answers won't be acknowledged.

Wild guesses and comments are fine. In fact, they can add to the mystery and are fun to read.

The Case:
Against the recommendations of her family and friends, an elderly woman begins an unusual diet. Her menu includes a variety of foods, but ultimately she eats something that kills her.

The Mystery:
What was the first item of the diet and what was the last?