Alice has a sensitive secret about Bob. She threatens Bob that if he does not act a certain way, she will reveal the secret. What is the most accurate term for Alice's coercion?
Blackmail is related to coercing money from the victim; here Alice desires Bob to behave differently than he otherwise would, so the term doesn't seem to fit.
Extortion is related to coercing personal property from the victim; again, the word doesn't seem to fit.
So what is the right word for coercing a behavior, choice, or action from someone?
In addition, when would such coercion cross the boundary of legality? (Surely I can withhold candy from a child in order for them to clean their room without fear of arrest.)