Trying to understand your post,you say your son in law is in the airforce and your eldest grandson has joined up too,you aren’t supportive of the military so maybe that’s a reason you weren’t told. I’m only guessing though, and that he’s in uk you were informed by your daughters best friend that she and your granddaughter were involved in a car accident and granddaughter in hospital awaiting surgery for broken arm. You drove to the hospital but no record of her being there, you then contacted your daughter demanding to know what’s going on,! And asked why you was denied information of what was going on, I can understand you being worried, but I wouldn’t have demanded anything at a time when feelings are running high and the parents are obviously worried I would have asked how your granddaughter was an your daughter and asked if there was anything I could do to help them, there must be a lot more to this story, it’s very odd that the sIL came down stairs presumably from the hospital and told you to leave before they had security to remove you! The nurses station did in fact call security but you left before they arrived!I presume there were raised voices for your Sil to want this to happen, sounds like there’s real problems between you your sil dd, Maybe you should just sit back and wait for things to calm down,