Chapter 73 Be closely bound together

What are they doing just now? Why do they talk to a child about this?
"Um, we don't say anything, Rain, you wake up so early." Ian Wilson's embarrassment was clear.
"Um." Rain Hill nods. "I went to bed earlier yesterday."
"Oh, then go wash your face and have breakfast." Julia Hill says immediately.
"Oh, yes." Rain Hill doesn't fully wake up yet, and she goes straight out of the bedroom to the bathroom.
After Rain Hill leaves, Julia Hill and Ian Wilson look at each other embarrassingly,...