Malle Babbe  (Crazy Babbe) is one of Hal's most revered paintings, and has been copied often (even by gifted forger Hans van Meegeren). Ironically, the painting Jacquemart used for his etching, hanging at the MET, was later found to not be by Hals, but a student or close collaborator. The original Hals painting hangs at the Gemalegalerie in Berlin.  The folio title used was "Hille Babbe - "La Sorciere" (The Sorceress) a misreading of the inscription on the back of the painting.  This explains why Jacquemart's etching differs from other prints of the painting (done by Flameng, Coclers, Pascal and others), in that Babbe faces to her right, and the owl (signifying drunkeness) is on her right shoulder, and she is not holding a tankard of ale (see pics of both paintings).  It was also later discovered that Babbe was a real person who resided in a home for the mentally deficient/indigent/alcoholic called Het Dolbuys, and that Hals was likely aware of her as his son resided in that institution at one time.