Keren's Plan
As Luke and Liz both stared at the logo for a few seconds in silence, Derek sleepily came down the stairs, having just woken up.
This broke the silence, and although Luke continued to see the photo, Liz turned towards the little kid with panic on her face.
If there was even a hint that he was going to repeat anything about what had happened the last night, she was prepared to take dire measures.
Sure enough, after idly rubbing his eyes, Derek looked at Liz and spoke in a slurring voice.
"Sis? Last night…"
In a flash, Liz was in front of her little brother, bending to be right in front of his face while her eyes met his, stopping him mid-speech before Mary or Luke paid any attention to him.
Derek was a kid whose intelligence and emotional maturity surpassed his age, so she considered how she was going to make sure that he wouldn't talk about the terrace incident.
If she directly told him not to repeat it, he would definitely get even more curious, and he wouldn't let it go.