I have a friend - we will call her Jane. Jane and I used to work together, but now stay close by attending a hobby together. I would consider her to be a good friend.
Very happily, Jane's first grandchild arrived a couple of weeks ago - healthy baby boy. I know her son quite well, and bought him and his wife a Congratulations card. I gave it to Jane to pass on last week.
We attended our hobby last night, and several mutual friends gave Jane "congratulations on the birth of your grandchild" cards. Is this a thing?? Will Jane be offended that I bought her son and DiL a card, and no card for her?!