My husband has night terrors, but he often goes to bed sooner than I do since he likes to get to bed very early. When I'm tired enough to go to bed at the same time, or just want to lay down around the same time, I'll lay awake for a time. I'm also a fairly light sleeper, holdover from being a farmer listening for sounds of trouble at night. So when he starts getting upset, I wake up enough to rub his back and tell him it's ok. He usually is able to calm down.