Colonel Hampton snorted contemptuously. Senile dementia! Well, he must have been senile and demented, to bring this pair of snakes into his home, because he felt an obligation to his dead brother's memory. And he'd willed "Greyrock," and his money, and everything, to Stephen. Only Myra couldn't wait till he died; she'd Lady-Macbethed her husband into this insanity accusation.
The above text is taken from the novel Dearest, by Henry Beam Piper. What does the phrase "Lady-Macbethed" means? Is it old usage, or do we also use this phrase in modern times?