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Season four has already dealt Kristina Braverman one of life's biggest blows after she was diagnosed with breast cancer in a recent episode of Parenthood. But as actress Monica Potter told ETonline about the character's journey this season, life doesn't come to a halt for any mother dealing with disease.

RELATED - Monica Potter Opens Up About Parenthood's Personal Storyline

In Tuesday's all-new episode, titled The Talk, Kristina continues to put the family's needs before her own as the success of son Max's bid for class president offers a brief ray of light into an otherwise dreary day.

RELATED - A Parenthood Star Takes The Helm

But even that joy is short-lived as you can see in this ETonline sneak peek clip from The Talk.

Parenthood airs Tuesdays at 10 p.m. on NBC.