Complex sentence: Amber was anxious not to break up Wells' marriage, though she wanted to have his child, the news that she was pregnant in the spring of 1909 shocked the Reeves family, and the couple fled to Le Touquet where they attempted domestic life together.
Split into simpler sentences: Amber was anxious not to break up Wells's marriage, though she wanted to have his child. The news that she was pregnant in the spring of 1909 shocked the Reeves family, and the couple fled to Le Touquet where they attempted domestic life together.