Very common for this to happen. Everyone’s stressed out. It sounds like you are handling it well and being the level-headed one. As we’ve already discussed this morning, you’re right, it’s too early right now to say when is enough enough. You have to have answers first, of course. See how it goes today and what they have to say. Hopefully tests start to come back. If their energy is too much, ask them to go take a walk, or to bring an iPad and headphones or something and play a game or watch a movie. Whoever is there needs to be supportive, and energy needs to stay calm. If things get tense, that might be a good time to have the chaplain come by. When the nurse calls the chaplain they can say the wife needs support, the kids are stressing her out a bit, etc, so the chaplain can focus on that.
The reason people don’t call in the middle of the night usually is because lots of things happen, and they know it’s important for you to get your rest, too. They save calls for when things aren’t looking good or aren’t manageable, generally. So it’s probably a good sign that they didn’t call, because whatever happened was something they could manage, even if it got a little hairy for a while (typical). When I speak to families I try to give them the facts without emotion, and reassure them that things are stable now, etc.
Lots of hugs.