When one views the moving-picture stories of the time, the use of a vase to induce unconsciousness is commonplace. Simply smashing a vase on the head of a victim would cause immediate sleep. That cannot be the case here; the man has already passed on the unconscious realm, so perhaps she is employing an additional vase to kill him. The watch on her arm is symbolic: time is up. The flowers are symbolic as well; they have been cut from the earth, and will now perish.