The logic here is so dumb my brain hurts.
-Wants to kill the Seven Heroes
-Finds one of their daughters that they abandoned
-Decides to kill the daughter
-Daughter threatens to kill herself instead
"Don't do that because if you do that I can't kill you."
But why does he even care about killing the daughter at all? She should've been taken off his list the second he realized she was abandoned because whats the point? If anything he should be upset that she wants to kill her Father since he's the subject of his revenge, essentially stealing his prey. It's just stupid. Their partnership is even more stupid. It'd make more sense if he just didn't care about her and she decided to try and follow after him.