Complex sentence: The couple had become steadily more reclusive in their final years as their health worsened and on the morning prior to carrying out the deed, Sheldon telephoned her attorney and informed him about what she was going to do.
Split into simpler sentences: The couple had become steadily more reclusive in their final years as their health worsened. On the morning prior to carrying out the deed, Sheldon telephoned her attorney and informed him about what she was going to do.