The Consuming Fire by John Scalzi
I loved The Consuming Fire! It's the middle book in a trilogy and do read #1 first. Galactic travel through the Flow is breaking down and human civilization is in grave danger. The Emperox of the Interdependency is convinced, but she’s surrounded by a lot of wealthy, powerful people who are actively conspiring against her.
Grayland II is a tough lady. She's convinced her empire is in danger -and it totally is. She's doing everything she can to figure out how to save as many people as possible, but as always there are others who are in denial or simply trying to spin things so they come out on top. There's politics and adventure and even a sweet romance that doesn't take away from the story as a whole.
The Interdependency is full of strong women, royalty, religious women, heads of merchant families, assassins, and everyday women whose common sense and unrestrained-ness make them just as valuable. I like that for the...