Sandra Oh as Cristina Yang in the April 12, 2012 episode of Grey's Anatomy, "Support System."

Cristina Yang in the April 12, 2012 episode of Grey's Anatomy, "Support System."

Owen and Cristina in what can only be a tense exchange the April 12, 2012 episode of Grey's Anatomy, "Support System."

Teddy and Cristina in a scene from the April 26, 2012 episode of Grey's Anatomy, "Moment of Truth."

Teddy and Cristina in a scene from the April 26, 2012 episode of Grey's Anatomy, "Moment of Truth."

Sandra Oh as Cristina Yang in the April 26, 2012 episode of Grey's Anatomy.

Cristina and Meredith on the April 26, 2012 episode of Grey's Anatomy, "Moment of Truth."

Cristina and Meredith on the April 26, 2012 episode of Grey's Anatomy, "Moment of Truth."

Cristina and Teddy in the May 10, 2012 episode of Grey's Anatomy. "Migration" is the second to last installment of the eighth season.

Sandra Oh as Cristina Yang in the May 10, 2012 episode of Grey's Anatomy. "Migration" is the penultimate episode of the eighth season ... will it be for Oh on the show as well?

Cristina Yang in agony in the eighth season finale of Grey's Anatomy.

Meredith and Cristina in a scene from the Season 8 finale of Grey's Anatomy.