Snape's Grief After Lily's Death

Snape, devastated after the death of Lily Evans at Lord Voldemort's hands, breaks down in Dumbledore's office. He expresses deep remorse and wishes he had died instead of her. Dumbledore urges Snape to help protect Lily's son, Harry, but Snape initially resists, overcome by grief and guilt. Dumbledore convinces him that protecting Harry is the only way to honor Lily's memory.