The Apothecary Diaries, Vol. 8 by Nekokurage
The continuing adventures of Maomao, between the women's quarters at the imperial castle and the pleasure quarters.
For once, she does no detecting.
It covers her backstory and family. There was only one surprise to me, it has been foreshadowed, but it filled in details.
And then there's a story about books for the women. After that, the princess, a year and a half old, gets to go for a walk in the courtyard, with some involved preparations and a twist in the walk.