How does Nancy meet her end?

Nancy met her end when she was given a bath by the laundress at the Perkins Institute. She fell apart.

The laundress at the Perkins Institution secretly carried her off to give her a bath. This was too much for poor Nancy. When I next saw her she was a formless heap of cotton, which I should not have recognized at all except for the two bead eyes which looked out at me reproachfully.