I don't think Rosalee's statement applied in this case.
Marie was the one who told Nick he had to hunt down the bad wesen. She killed Monroe's great grandmother, no doubt because the grandmother hunted and ate humans. Marie would have considered her a bad wesen and would have killed her her wrongdoings, not because she was a wesen.
Marie was the one who told Nick he had to hunt down the bad wesen. She killed Monroe's great grandmother, no doubt because the grandmother hunted and ate humans. Marie would have considered her a bad wesen and would have killed her her wrongdoings, not because she was a wesen.
The best way to frustrate a cyberbully is to ignore him.