Apparently, Even If I Don't Participate, She Does My Part And Carries On Without Me

Maggie (woefully, from her carseat) to Mama: Ohhhh! Mama! Maaammaaa!
Mama: What's wrong, Maggie?
Maggie (covering eyes with hand, as seen by Mama in rearview mirror): I'm so sad!
Mama: Why are you so sad?
Maggie: Because I'm crying! (sobs theatrically)
Mama: Why are you crying?
Maggie: Because I'm very sad!
Mama (sighing): Why are you very sad, Maggie?
Maggie: Because I'm crying!
Mama: Okay, we're in some sort of conversation loop now. I'm very sorry you're so sad, Maggie. Let me know if I can help you.
Maggie: I'm really sad ...
[Pause. Brief silence]
Maggie: I'm so, so sad!
[Pause. Maggie waits. No one says anything.]
Maggie: Why is Maggie sad?
Maggie: She's crying.
Maggie: Poor Maggie. Why she crying?
Maggie: 'Cause I'm very sad.