Christina became Queen of Sweden as a child and abdicated as a young woman. I absolutely hate her. She was a terrible queen and a selfish, pompous, spoiled woman. I was so pleased when she abdicated the throne so she could pursue her Grand Artistic Future, and doubly pleased when it turned out she was no great genius, after all. She died alone, desitute, and despised by most of Europe, which I think fitting for such an annoying person.
The history itself is well-researched and well-written. I usually read about monarchs whose fates I already know--it felt very weird not to know what would happen. I was so impatient to find out that I actually skipped ahead several times.