hmmm...i don't see home invasion up there, a favorite fantasy. i'd have have to go with the institutional: county lockdown... on a 72-hour hold, after a suicide attempt...because she was raped.
I'd generally go for the careful planning approach. No urgency, like the random grab; no pre-established despair, like the institution; no quasi-consent, like the blackmail.
Second would have to be home invasion like ghostgirl said. Safe in your bed, in your home, in your sanctuary - that night when you turned out the lights perfectly confident and blissfully not thinking that anything could or would harm you. And then everything is taken from you, right there in your own bed, the one you never want to sleep in again, the house you want to burn because of the memories it holds...I'm sorry, I'm rambling.
Home invasion good.Blackmail good.Institution good.Abduction good.I've said it before and I'll say it again: Never trust someone who only takes one thing from a salad bar.