If the grandparents want to be part of your baby's life, then they have to include you too. If they are going to disrespect you by shunning you and excluding you, then they don't get to see the baby.
That is what bugs me... I mean they will sit in a room with me and make small talk but only to see her... aside from the religious differences my parents and I have unresolved issues to deal with that I have tried to approach them with and everytime they just ignore me! how can I let them back into my life when they are unwilling to deal with the past?
At the same time, I won't want to be the reason my child has no relationship with her grandparents... it is a real predicament!