Being betrothed means she wears the insignia of betrothal: engagement rings and all the gifts Pilatus has given her - jewels, earrings, necklaces, and the pendants.
Estar prometida significa usar  a insígnia do noivado: anéis de noivado e todos os presentes que Filato lhe deu: jóias, brincos, colares, e os pendentes.