Quoting #1ontheway:" "Grandma, i'm having a baby and i'm super excited! Got any advice you could give me?" (Old people are finicky)"
This is a great conversation starter. You are going to need all the family support and (possibly) advice you can get when you are later in your pregnancy and after delivery. Find a way to bridge that gap now so you can go to her when you truly need her.
You'd be surprised on the level of maturity comes with taking other peoples advice and feelings into account when you are having a child. I bet she just wants to hear out of YOUR mouth that you aren't going to let a pregnancy stand in your way of doing something with your life.