Series
There is 1 book in the Winter's Orbit series.
A prince and a diplomat are forced into a political marriage to prevent galactic war, only to stumble into conspiracy, mutual trauma, and—despite everything—genuine affection. Maxwell writes space opera as much concerned with consent and healing as with interstellar intrigue.
All 2 books total 816 pages.
The Books Oracle — track the series you are partway through, and see what to read next.