Answer:
When they realized that they were about to get eaten by the walrus and the carpenter.
Explanation:
She's able to be happy at some points. "Turning on the light upstairs" is a way to "turn on" happiness.
Either the second or third answer
There is an archaic term "Exeunt" used to describe a situation where many characters leave the stage. "Exeunt Omnes" would be the stage direction for everyone to leave.