Mina
Mina asked Sarah MacLean:

Hello! I just finished Day of the Duchess, and was wondering when did the other 3 sisters get marry? I remember Sophie of course, but the other two?

Sarah MacLean Hi Romina --
Both Seline & Seleste were married in the time between Sophie's & Sera's books. You see reference to their love stories in A Scot in the Dark.
Thanks for reading!
Sarah

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