Looks like this music mistress has got a little fed up with her pupil’s playing. There’s no instrument more painful to listen to than a badly played violin, and clearly she’s decided she shouldn’t be the only one to have to suffer. Although I can’t help thinking that the quality of the sound will not be improved after administering a spanking with the bow. Maybe the pupil should explain that she’s playing all the right notes, but not necessarily in the right order.
I’d love to know the original provenance of this image. I found it on the ‘Stuff I like‘ tumblr site, but with no hint where it was from. It obviously appears to be a period photograph, but I wouldn’t be surprised if it turns out to be more modern than it looks at first glance.