Conversation so far:
Who does Maura Tierney play in Beautiful Boy
Maura Tierney plays Karen Barbour-Sheff in Beautiful Boy.
What is Karen's role in the movie Beautiful Boy
Karen is David’s second wife. Because the two got married when Nic was still a child, “she really did a lot of parenting.

Question: Married in real life
Self-contained rewrite: Is Maura Tierney married in real life