Here is the full list of all 9 My Lady achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
The girl unties her ribbon from her neck. Forfeit.
The girl gets trapped in the glass case. Knight takes Bishop.
The girl chooses the prince and the pauper. Stalemate.
The girl marries her prince. Checkmate.
Manners are often overlooked...
You chose to wear white...
The lady locks the girl in her tower. Queen takes Bishop.
You chose to wear red...
You began your story...