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Basic Trope: A female character whose primary goal is to seduce, marry and kill rich men so as to inherit their money.
Straight: Maud is unbelievably gorgeous and seductive but also greedy, amoral and manipulative. She often goes to bars and singles' clubs to seduce rich and successful men, marry them... and then kill them in cold blood by making them "have an accident".
Maud doesn't even care if the men she seduces are rich or married. If they fall for her, she will kill them and their whole family as well.
Maud has killed hundreds or even thousands of men this way.
Maud falsely accused her husband of neglect and abuse and managed to get a divorce and compensation, ruining him in the process.
Justified: Maud was actually always The Mistress of the men who fell for her, who promised her that they would leave their wives for her. After too many rounds of false promises, she decides that all men need to pay for what was done to her.
Inverted: Maud resurrects a dead man and marries him, so she can share her wealth with someone.