In my experience parents, especially very young ones, can easily feel that us GPs are critical or interfering when we think we’re just trying to help. Possibly someone, the mother or her mother, feels a little threatened by you.
I’d probably send them a nice card from your holiday and arrange for congratulatory flowers or chocolates to be delivered either then or later when you are home.
If the situation allows I might take a gift round, stand back from the door and say, ‘I’m just dropping this off’ so it is clear you’re not expecting to be invited in. I’m wondering whether your only meeting with the maternal grandmother was uncomfortable for one or both of you. The first time I met the mother of the young woman pregnant by my equally young son I was very apprehensive. Luckily she immediately said ‘We’re not angry but we’re disappointed’ which relieved the situation.
I hope things improve for you.
I saw my son’s first 2 babies one on the first day, the second on the second day, in both cases at his invitation to the hospital. His younger 2 I saw after a couple of weeks as they were in another city 100 miles away.
My daughter’s first was very prem, his chance of survival improved day by day. I saw him on the 3rd day. Her other two I both saw the day they were born. My GGD I saw at two days old.