When Thomas visits, to deliver vegetables, he specifically mentions the rutabaga. The term rutabaga only exists in North American English. The rest of the world knows it as a Swede, Swedish turnip, or simply turnip. Even in North America it is also commonly referred to as a Swedish turnip. As a European, Thomas would never call is a rutabaga.
When Vivian is singing "Material Girl" by Madonna, it's obvious that she is lip-syncing.
While there are some aspects of the film that would fit into the 19th century, the show isn't set in a specific time frame. The costumes range from medieval styles through 17th, 18th, and even 1950s styles.
Although the film is set in the 19th century, angle grinders are powered with electricity.