Eliese has seen a lot of shit over her many years of service. One would think that retiring to a teaching position would cut down on that sort of thing, but alas, there is no idiot like a young idiot. She is among the most qualified of the staff to clean up the various messes, so when a giant mirror-head snake abruptly appears and starts causing a ruckus, she's the one to deal with it.
She was not expecting to get eaten in the course of so doing.
She was also not expecting to see something other than exploding snake guts after such a thing happened.