How does Da-Duh die in the story, To Da-duh in Memoriam?

When Britain sends planes to fly low over the island in retaliations for riots and strikes, Da-duh, alone among her community, refuses to take cover in the cane fields. She stays in the house and watches the planes. The narrator imagines that it must have seemed to Da-duh that the planes were going to destroy her house and the whole island. When the rest of the village returns to their homes after the planes have departed, Da-duh is dead, still sitting in her chair at the window.