I have a toddler. My wife takes her to the meetings, and she loves it. People dotting on her, all the other little kids (just a few but still...).
But she is just a toddler. I am still wrapping my head around how I will make sure she thinks for herself. It seems I am going to have to be somewhat connected to these two worlds for the foreseable future. So I am making my game plan now.
Ultimately my daughter will be responsible for her own life and her own decisions. We all are. Even being indoctrinated at a young age, we ultimately have to stand up and take responsibility for what we did, what we believed, and who we are.
I sympathize with your situation. Maybe it is a little selfish. But then again, would your kids (not knowing their ages), know enough to know what is really going on? How would your husband react? Would the JW family love bomb the crap out of the youngsters and they would turn on their mom? I can only imagine the embarrasment and shame from that phone call. No judgement here.
The slow and steady win this race. Be a good person. Love your kids and think in their best interest always. Its the long game you are playing here, not the short. There may be some pain or problems short term for the long term good. What else can you do?