You were being an ass, dude.I'm sorry but since when did I give you any right to talk with me like that? Did your parents not educate you or did you not even have them to do so?
One more thing, fuck you and your repentance. I wanna see you tell to the family of a murder victim that the murderer changed his mind and is now repenting. FUCK YOU.
By the time Hydra found the MC, she'd been alone for at least a month searching for him while bearing the guilt towards her father and country about being de-facto kicked out of the hero party.
So she was on the verge of a mental breakdown as-is and when she saw the target of her search all happy and healthy instead of beIng like her (stressedanddespondent), she snapped. Especially after he declined her offer to return.
She wasn't responsible for her actions after that as is it happens with psychopathic episodes (ie insanity pleas).
So get off your high horse.