She was charged for using witchcraft, so she was hanged. The thing is, they were just accused of bringing smallpox to Andover, but this disease killed two of her children, leaving the two other children and the husband both fine. Seems suspicious to the authorities. The evidence against her was people she knew, like neighbors. They accused her of curses and "powers" that she suddenly had. Though Martha pled not guilty, she was still hung.
