In "The Vampire Prince" by Darren Shan, a key moment occurs when the protagonist reflects on a promise made to Arra as she lay dying. This promise to prevent Darren from dying creates a deep internal conflict for the character, who finds themselves caught between their loyalty to Arra and their current commitments. The weight of the vow hangs heavily, showcasing the struggle between personal loyalty and the demands of other relationships.

This dilemma adds depth to the story, emphasizing themes of loyalty, sacrifice, and the bonds between characters. The protagonist's plea highlights the emotional turmoil they face, fearing they may have to choose between honoring their word to a dying friend and the expectations placed upon them by others. This situation underscores the complexities of human (and vampire) connections amid the backdrop of the supernatural narrative.