Hughes recalled the event to MSN TV: "We just started improvising with her, like anything.We were throwing things at her and she was just talking away.Tristan and I were looking at each other over her head going, 'This is it! We used to just talk around the plot and maybe every now and again dip our toe in the actual storyline." Mc Cullough debuted on September 6, 1985, and stayed with the series until September 12, 1996.
Frank Valentini, Ron Carlivati and Mc Cullough discussed her departure, and Carlivati, who was uncomfortable with the idea of Robin being "completely dead", rewrote her story.
She guest-starred for one episode on March 25, 2013, in a video message Robin left for Patrick.
On August 21, 2013, Soap Opera Digest exclusively confirmed that Mc Cullough had signed a contract to return to the series.
In 2018, it's revealed that Robin has a long lost half-brother named Henrik Faison, later known as Peter August through her mother.
A seven-year-old Mc Cullough was one of three actresses narrowed down for the part of five-year-old Robin, and was brought in to screen test with her on-screen parents Finola Hughes (Anna Devane) and Tristan Rogers (Robert Scorpio).
She appeared on "Port Charles" in 1998, for one episode.