Donna in the Apple TV+ series Shrinking is a supporting character introduced as Mark’s wife and one of Gaby’s therapy patients, adding another layer to the show’s mix of personal and professional relationships.

She is played by actress Jill Knox, who is credited as “Donna” in multiple Shrinking episodes, including “Woof” and “Honesty Era.”

In the context of the show’s ensemble, Donna helps flesh out Gaby’s life outside the core trio (Jimmy, Paul, and Gaby) and gives a glimpse into how Gaby relates to clients and friends in more everyday, sometimes humorous, sometimes emotionally grounded situations.

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