Complex sentence: Kieron, ashamed of his past drunkenness and wishing to make things right with Patricia, punishes Adam's own bad behaviour by disowning him and allows Patricia to write an article about Melissa's death, even though the article will reflect poorly on Kieron.
Split into simpler sentences: Kieron, ashamed of his past drunkenness and wishing to make things right with Patricia, punishes Adam's own bad behaviour by disowning him. He allows Patricia to write an article about Melissa's death, even though the article will reflect poorly on Kieron.