Pig Head Song

Okay now this weird French governess in this novel is singing "a quaint old Bretagne ballad, about a lady with a pig's head." Uh, here's some of it: "And she would sing like a funeral bell, with a ding-dong tune./ The pigs were afraid, and viewed her aloof;/ And women feared her and stood afar./ She could do without sleep for a year and a day;/ She could sleep like a corpse for a month or more./ No one knew how this lady fed -/ On acorns or on flesh." WHAT!