I'm so very sorry to read this. I expect I'll be posting a similar thing when and if my son ever has children. He is fully involved with his girlfriend's parents, whom I've not met. I think he's been with her for eight years now, and I hardly know her either.
Facebook has a horrible way of slapping us in the face, I saw my son in a big 'family' photograph yesterday with his girlfriend's brother being seen off at the airport. I thought he might ring, or come over, as it is the long weekend.
I definitely would not have met my new grand child at the railway station, and hope a nicer venue is suggested when they are less stressed with a new baby 