She is the mother of the child.
He is the father of the child.
- He is the older half-brother of the child.
She is the older sister of Hank. Christine first found out about Brennan's pregnancy in The Eye in the Sky, after overhearing her parents discuss when to tell her she's going to be a big sister.
- 11.01. "The Loyalty in the Lie"
- 11.03. "The Donor in the Drink"
- 11.08. "High Treason in the Holiday Season"
- 11.18. "The Movie in the Making"