The end of the dinosaurs...
The skies darkened... The sun disappeared behind a huge ball of fire heading straight towards earth. The impact killed millions of creatures; the rest were to die slowly of starvation, no sun, no plants, no plants, no herbivores, no herbivores, no carnivores. No one knows how Mrs. S survived, but she did. Alone again for many, many, many, many years, with so much time on her hands, we guess she decided to hibernate.