The version I have of Pearl Bryant (who was known the wild world o'er / Beheaded by Scott Jackson / whom she really did adore) ends with the admonition "Oh girls, don't lose your head!"

And my version of another murder ballad whose name escapes me, but it's about a man who comes to take a woman out walking but kills her instead, and the sister testifies - "She swore I was the very man that took her sister out!"