I am here to get my ammo and try to do the same thing: get someone out of the Watchtower. I have several books, and have been reading from sites like this one from months, and have come to understand that, right from the start, you need to realize that most likely you won't be successful. Then, you have to really ask yourself whether you could afford to lose contact with this person, which is one of the likely outcomes. Then you have to be extremely patient, and have a strategy in place. It can take years; this is not a mere presenting them with the facts and they will understand. NO, THAT DOESN'T WORK. I suggest you get yourself "Releasing the Bonds" and "Combatting Mind Control". I am not even started with them yet, as I am only finishing "In Search of Christian Freedom". You have the great advantage that you know the JW mindset, while I don't, and sometimes I ask people stupid questions about what a JW would do or not do.
Go easy.