This is so sad. *cries*
I'm trying to imagine what it's like for the owner and the other sheltie to go through this.
There should be a test to see how much a particular dog can take of the sedative; that amount always being adhered to, or it's jail time and a steep fine for the groomer. Zero tolerance!
BTW, does anyone know if groomers get taught about giving medication when they get licensed?