She looks a little concerned, like maybe she just broke a nail. You'd probably never guess she is removing some one's head.  Poor Holofernes, one of Nebuchadnezzar's generals, was the lucky guy.

A good many artists have rendered Judith in the act, Donatello, Sandro Botticelli, Gustav Klimt and many more but none better than Caravaggio.

Judith Beheading Holofernes Tile replica from the original oil on canvas by Caravaggio  (1571-1610) Galleria Nzaionale d'art Antica, Rome.

I don't care what she's doing. She looks great doing it.