Goldie is totally awful but Marigold has a certain period charm. Frances grounds it nicely.I find it puzzling that after losing Marigold they named their subsequent daughter Mary. In their place I'd have used another name with Marigold as the mn.
There an AH that also has a surviving Marigold Churchill. She goes by Goldie for much of the short story for much the same authorial reasons that characters in shows like The Prisoner use terms such as "the home country" in order to hide their true origins from the audience.