As many viewers noticed when Marigold first appeared on the series, the actresses playing the character changed after only a couple of episodes. As one viewer notes on Reddit, Laila and Amelia Whitney played Marigold for the first couple of episodes in series five, but were switched to Eva and Karina Samms in the sixth episode. The Whitney twins made "a VERY brief appearance in episode 7" according to the viewer, but the Samms twins went back to playing Marigold after that.

When "Downton Abbey" came to an end, the Samms twins also made an appearance in the first "Downton" film (via IMDb). But outside of the ITV series, it seems that they haven't acted in anything else, according to their IMDb pages. And unlike Oliver Barker and Fifi Hart, the girls aren't active on social media either. It may be a little unclear as to where Eva and Karina Samms are now, but you there's still a chance that you'll see them in the next "Downton" film.