The Traders' War: The Merchant Princes Books 3 and 4

In The Traders' War by Charles Stross, the third and fourth books of The Merchant Princes series, ambitious journalist Miriam uncovers her family's ties to an alternate reality after being fired. As she navigates this new world, rooted in a medieval culture where women are considered property, she must confront deadly relatives, the dangerous world of drug trafficking, and an impending arranged marriage while trying to maintain her independence. With secrets lurking and threats escalating, Miriam's journey is a thrilling mix of intrigue and survival across dimensions.