If Ghost doesn't get excited like before, Hughes won't wake Blaze this time around. Even if she feels like hell in the morning, getting some amount of sleep is good for her. It would be better if she weren't so mentally stressed, but there's nothing that can be done about that.

Watching the sun rise over the earth when the time comes will be a great distraction from the sleeping Blaze. It's a sight he's only going to be able to enjoy once and he's taking full advantage of that.