Complex sentence: Saffron finds out that she was adopted by Bill and Eve, after Saffron's mother, who is Eve's sister, is killed in a car crash and becomes deeply upset, despite being comforted by her family.
Split into simpler sentences: Saffron finds out that she was adopted by Bill and Eve after Saffron's mother, who is Eve's sister, was killed in a car crash. Saffron becomes deeply upset, despite being comforted by her family.