Hubert said, "...I got a "stearn warning".....back off or lose us. So, I backed off. She knows where I'm coming from, unfortunately."
You have planated seeds. It may take some time for them to grow. Getting someone out of a high control religion like Watchtower isn't quick.
In time they may develop doubts, or see something that isn't right in the organization, or otherwise detect a crack in Watchtower. When that time comes they will remember some of the information that you gave them, and will be ready for more.
Remember that the religion of JWs is a lifestyle. Strong friendships have developed. Rejecting the religion amounts to rejecting everything in their lives, including the only assosiates they have, something people will be reluctant to do.
I believe most JWs who have been in the organization for any length of time have doubts (if they are thinking at all), but the control of the religion is enough to over power them. As they get older they will see things more clearly, and at the same time will be more willing and able to take a stand for what is right.
You never know when the seeds will grow, but as you have seen it's best not to push too hard or you will alienate them. It's a balancing act, and it takes patience.