I know most of us wonder how to reach out to an inactive member. As some one who was inactive for a while, I found it offensive when church members would say "it's because she didn't read the scriptures enough" or "oh, she must have found some "anti" material." Which would insult me, and make me even more reluctant to come back to church. Somes times, that's true, but not most cases.
It's best to understand some one in order to help them right?
I found this you tube video that explains why some members "fall away" and what you can do to help them, and what is not helpful.
YouTube - Why People Leave the LDS Church ( Mormon )
WARNING: It's long. It takes forever, it's a boring slide show. You may want to just want to FF to the next slide after you read it.