"Well, I…I don’t know. I…I must have thought the morning had come."
"But how could you think that? It’s still dark out."
"Yes.Yes, it is isn’t it? Dark, very dark"
"Barnabas, you’re very strange."
Caught in the act. Julia walks in on Barnabas about to give Joe his “medicine.” Since it had already been established that Joe has had his proper dosage for the night, Barnabas can only hem and haw about being so overtired that he thought it was morning. But not too tired to continue the bedside vigil. Julia calls him very strange (*lol) and exits. But she takes the bottle of medicine with her, flashing him a very suspicious look.
"I won’t fall asleep until sunrise. You have my promise."
"All right. I’ll take this with me, in case you get confused again."