Yes, her name is Astrid.
Maybe there's a reason for her facial expression. Imagine this scenario:
Mathilde saying to Philippe: "You didn't take out the trash?"
Philippe answering: "It was
my turn to take out the trash?"
Astrid overhearing and thinking: "Oh, Philippe haven't you learned by now that you're supposed to do things on your own, and that Mathilde doesn't have to tell you to do this and that all the time. Good thing Lorenz knows this".
Lorenz thinking: "Oh, you're in trouble now Philippe. Well, you've only been married for almost five years, so I guess you'll learn in time. I did. Astrid doesn't need to tell me to do anything anymore. Nope, I do it all on my own, which means no trouble with the wife. Oh wait. Noooooo, it was
my turn to do the laundry, and I completely forgot about it. If Astrid finds out I'll never hear the end of it. What do I do. Now I know. I'll call home and get one of the kids to do it. Uh, close call."
All in good fun.
Does anyone have another suggestion to what might be said?