Hope she does it.
Because no matter what, this guy is a fucking bastard, even if recently he hasn't been reckless he still spent his life killing whole families.
I know, Asian religion are all about forgiveness and the likes, fuck that and kill him now, no second thoughts. He perfectly set himself up, he'll get a nice death, she won't feel as if she killed him out of revenge and she'll get to seriously damage one of big bads (no way that'd kill him).