COTD: First woman goes after her son, being beheaded, I think (7)

day 38 of an experiment in which i press the "random word" button on onelook and make a cryptic clue out of it.

day 37, day 36

day 35, day 34, day 33, day 32, day 31, day 30, day 29

first four weeks (days 1 to 28)