I think questions are a good way to do it, or to tie in what they believe to actual events. A witness at work who is always doing the "the world is so bad" line is one I do the actual events on. When ISIS was destroying temples, she complained about the art being destroyed. I said Well they believe it's pagan. It's no different than the Israelite's going around and destroying all the pagan temples and art. Silence and big eyes. She says it's terrible the people they are killing. I say yes it is, they took homosexuals to the tops of roofs and threw them off. Silence.
I've also discussed with her that there are people that are born with both the X and Y so that doctors don't know what gender they are. That homosexuals are really born that way. That caused her to think.
Will this all mean something down the road to her? I don't know. But as they say A journey of a thousand miles begins with a single step.