live, Could it be that your daughter is expecting sis to be the one to tell the news to everyone? I wouldn't think she would intentionally hurt you. Have you gotten a chance to go visit yet? or are they too far? I'm sorry I can't remember.
Try not to read tomuch into things just yet, sometimes jumping to conclusions can have explanations we were not aware of. Try to keep the beauty of the moment first, your beautiful grandson. The answers will come in time.