what does Rebecca Nurse say will cure the girls' apparent illnesses?

They must simply wait and love......

"I think she’ll wake in time. Pray calm your-selves. I have eleven children, and I am twenty-six times a grandma, and I have seen them all through their silly seasons, and when it come on them they will run the Devil bowlegged keeping up with their mischief. I think she’ll wake when she tires of it. A child’s spirit is like a child, you can never catch it by running after it; you must stand still, and, for love, it will soon itself come back."

Source(s): The Crucible