As his friends descended into chaos, Draco grabbed the firewhisky and began nursing the bottle as his only refuge. Without the spark to numb him, he was vulnerable to all sorts of conflicting thoughts surrounding his father. Blaise had a point, after all. Lucius is the reason he was marked. Without Lucius’ involvement with that madman in the first place, he would never have been put in danger and his mother would never have been in harm’s way and needing protection to begin with.