@Mymin6226 I think its because she views his power as evil and he is therefore evil. As such she views her actions as nothing more than her attacking a demonic child. regardless she the guillotine.
But i think she hated him before she knew his power. Maybe because she hated his father ? I hope i’m not mixing all the stories I read but if i rembember well, it was said he was born with dark magic because of the hate of his parents for each other ( maybe i’m wrong)
This is a character driven story over a plot driven story. The misunderstandings happen because the characters are who they are. This story is excellent for what it does.
And I cannot believe that this woman is so evil as to try to make his friend make him drink something harmful to himself. There is such a psychological approach to her abuse. It's sick.