Yes, I do think that the commenter (commentator?) meant 'how sad that the people who are supposed to love them do nothing'
But I've learnt to notice how often women-as-humans-with-rights are erased from such handwringing. It should be enough, more than enough, that a human being is being sold into sexual slavery. It shouldn't matter whether they are someone's sister or daughter, it should matter because they are a person.
Not getting at you Major I hope it doesn't come across as though I think you think the opposite to what I've said here. It's just now I've noticed how often women are defined relative to what they mean to someone else, I see it everywhere and it rankles, even when meant kindly.