When Mary sits with her baby, what did her captors do?

While Mary is sitting with her baby, her captors tell her that her master will hit her child in the head.

I sat much alone with a poor wounded child in my lap, which moaned night and day, having nothing to revive the body, or cheer the spirits of her, but instead of that, sometimes one Indian would come and tell me one hour that "your master will knock your child in the head," and then a second, and then a third, "your master will quickly knock your child in the head."