I'm sorry that happened to you. It hurts. Congrats on the baby!
Yes, WT is really pushing the shunning. They are afraid of all the damage us "evil apostates" can do. It is sad the damage WT and the GB have done to the family unit. I hope that I live long enough to witness the demise of this disgusting cult.
Enjoy your life and your new family. We are! Those who choose not to associate with us are the ones missing out. You sound like a very nice person. It is your Grandmothers loss. Sad is that is to say, it is true. You can't change how people treat you. Hang in there! Enjoy your freedom!!