First; congratulations!
If you have been following Gransnet for a while, you would have seen that this is the way young parents are doing things these days.
Presumably, they are being advised by their peers, perhaps by midwives or books about child-care to establish a routine between parents and child and "bond with baby" before showing their child to his or her relatives.
Sadly, the young couple did not think to warn you before the birth that this was what they were intending. None of them do, so apparently that advice is not included in the "wise words" of whoever dreamed this odd new practice up!
To anyone of our generation, these young parents are being rude, inconsiderate and deliberately hurting their parents and parents-in-law, but of course, this is not their intention. They are simply doing what they believe best for their precious baby and themselves as a family of three.
Bite your tongue, dear lady and wait for your daughter to phone and invite you. If you show your hurt or try to hurry her, you might very well end up in a flaming row and a rift that cannot be healed.