Let me try to outline a story. Suppose in a fantasy setting, there's a mother who is a powerful enchantress. Her son is a normal boy growing up, but the mother has a special connection to the magical realm. The "extra quality" could be a mystical artifact or some inherent magic in her. The son gets caught up in her adventures, or maybe she's trying to pass her knowledge to him, but there's a temptation or a challenge involved. The seduction could be metaphorical, where she tempts him into embracing his destiny or fighting against an evil.