Great topic! I too am addicted to this show and its craziness, although I'm really into History and period dramas/movies.
Show Mary/Francis are supposedly 15, and Sebastian... 17!
The thing that made me really mad was its lazy/typical portrayal of Diane: I mean the age difference was already an interesting factor (when the actress they casted was only 3 years older than her fictional son Sebastian), and if you add the fact that she gave tips to Catherine when she couldnt conceive children you have an amazing dynamic between two female leads going to waste. Some accounts say she was the one to raise Mary when she first arrived in France, because she was Henry's most trusted friend. She had two daughters from her deceased husband, but the most interesting fact for me is that she was titled and rich, meaning she was not just a glorified mistress. Now she's just gone lol I'm over it.
THIS drove me crazy.
And I don't know which name is more atrocious, Kenna or Bash?