I assumed it was that he tortured her, and that he threatened Charlie and Danny as well. Judging by Miles asking Rachel whether or not Monroe hurt her, I'd guess she was treated pretty well until Miles left -- it's just a matter of when that was in the 8 years.
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|Lost|How I Met Your Mother|V|House|Revolution|Once Upon a Time|Firefly|Dollhouse|Person of Interest|Battlestar Galactica "And how are we going to do that?"
"T O G E T H E R"
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