In 2014, Walsh had a supporting role in the first season of FX's television series "Fargo". She had a guest starring role in Hulu's original series "The Hotwives of Orlando" and later starred in the NBC series "Bad Judge", which aired for one season. As of 2017, Walsh stars in the Netflix drama series "13 Reasons Why", as the mother of a child who commits suicide. Her performance was met with critical acclaim, having been dubbed the "best work" of her career.