Well, her time is likely very limited in general since she has kids, so that might not be something she has time for?
My other thought is simply that it is her time with the baby and however she chooses to experience her pregnancy is really her own. I know you are excited, but I think this is truly her time and baby right now, so to me there's a kind of boundary line.
If you are involved at all with dr's visits or etc., maybe you could make your own journal about things? Or maybe ask if you could have copies of the ultrasound etc. to add to your journal?
Your journal of "While we were waiting for you" is a very important story to share with your child too...they'll cherish that when older.
Hopefully some experienced OA moms have suggestions!