Sorry Trav, I've had a half typed reply on here for hours and kept getting interrupted.

She's had night terrors for years so I'm a pro.
If I'm sure it's an hallucination (so like never), I wake her up. And treat her fever. Some kids are awake though, so I'm not sure what I'd do then. How did he react to being touched/ spoken to?
Neither of mine can be touched though if it is a terror (which also happen when they're sick...), so I have to run the gauntlet and test it out.