I agree about the need for solid background. Point is: too much detail will bore the reader, too little will make him stumble over the logical gaps that you didn't fill. The middle ground is very difficult to find.

On the gradual thing and the waking of latent desire: The story will certainly run much smoother if the victim is reluctant but somewhat willing.

One of my main questions is how far would someone being blackmailed be willing to go to preserve her secret? Real life blackmail is usually about money to an amount that the blackmailed is able to pay AND continue his usual life. Giving up all you own is asking for too much, the victim would just turn to the police and suffer the exposal of her secret.

Satan_Klaus

PS: Here is a blackmail story I wrote and that was rather well received.
http://www.bdsmlibrary.com/stories/s...p?storyid=3544