Sybille Matteris started her teaching career at Hogwarts with a bang. That bang was a punch to Murdoc Donoghue's face. Meeting your first love and finding he has two kids is hard. It's hard and nobody understands.

She also harassed her new students, more than likely making Tavros cry. She also fought with Feferi and told Gamzee that relationships and people were useless.

But now she has to take care of Vriska, who is some how related to her through pureblood shenanigans, and maaaaaaybe it will help her be able to relate to children and will make her less of a terror. (It probably won't.)