Next to Violet's alias on the patient list, it states that she's been admitted for a pricked finger. Count Olaf later refers to her as "sleeping beauty", who in the fairy tale falls into a deep sleep after pricking her finger on a spinning wheel. See more
Have you ever hunted, Violet?
Of course not.
Well, if you had, you'd be familiar with a particular experience. There is a particular moment at the end of a long hunt, when you have the animal cornered. And the animal looks into your eyes, deep into them, to see if there's any mercy in there. And when it sees that there is not, it gives up. It gives its life to you.