It seems growing up in a cult many of us become prey to a manipulative and narcissistic types. Having been a victim of CSA, it's possible her sexual boundaries were messed up too. If she has gotten involved with BDSM with an unsafe man it doesn't excuse her if she's guilty. I'm just saying it makes her more vulnerable to emotional abuse and manipulation by sexual predators.
Also as we've said on other threads, just because we reject some of Jehovah's witnesses system of morality doesn't mean that suddenly everything is on the table and that we don't have any sense of sexual morality whatsoever.
I think most ordinary people would concur with 80% of the values JWs hold, actually. Just because we want to reject that 20% that's so toxic, doesn't mean we (particularly as women) don't need to remain careful about the types of guys we allow into our lives.....and our bedrooms.