Complex sentence: After his death, she returned to her birth country Sweden, and retired to her estates in Västergötland and Värmland; when she left, she was forced to leave her daughter Kristina Sverresdotter behind in Norway against her will.
Split into simpler sentences: After his death, she returned to her birth country Sweden, and retired to her estates in Västergötland and Värmland. When she left, she was forced to leave her daughter Kristina Sverresdotter behind in Norway against her will.