You are Severus Snape's child. You are around 17-18 years old. You and everybody else in Hogwarts are in the middle of a war.

Right now, you are hiding in the Shrieking Shack. You saw Voldemort talking to your father. Across from you is the Golden Trio who are also hiding. After a minute or two of your father and Voldemort talking, Voldemort's snake, Nagini, bit your father multiple times in the neck. You watched on in shock. Once they were done, Voldemort and Nagini disapparated to Hogwarts.