Congratulations!!!!
I am very happy for you!
About the JW in-laws....my mother was involved with my children until I left. She not only cut me off cold turkey, but her granddaughters as well. They were only 6 and 10 when they lost her as a grandmother. SO, better that your son never knows his grandmother, than to know her and then lose her. "Mom, why doesn't grandma come visit anymore?" I will tell my new son (coming in 3 months) that he doesn't a grandmother on my side. MUCH easier, especially since I have inherited amazing grandparents on my husbands side, have a wonderful father, and a step-mom.
Look at what you HAVE, not what you don't have.
Jez