Berg's "I'd Hear Laughter"

This approach is deceptively simple. But how does Berg skillfully integrate what could have been rather weird and rigid questions in the interview to make it come alive and pursue the line of inquiry/discussion to some fruitful ends?

How did she gain a fuller picture of the family's interactions and situations?

How does Kim Berg redirect the family in thinking along a different framework than those of the family members. What are they?