The Hotheaded Alchemist's Embroidery-Wielding Wife

A certain princess: “Only someone of my standing is worthy of him!” The embroiderer: “Of course, Your Highness. You are precious beyond measure and must never be wronged. I’ll tell Master to make you his equal wife!” A certain female archmage: “Only I can give him the greatest help!” The embroiderer: “If you’re willing, dear sister, I’d be delighted. Tomorrow I’ll have Master bring you home as his concubine!” “No! Our Master would never get involved with a married woman! Please, Madam, have some self-respect!” The embroiderer has always kept the Three Obediences and Four Virtues firmly in mind. So why is everything turning out differently from what she imagined?