She is attended by two ladies-in-waiting , or `` meninas '' : doña Isabel de Velasco ( 2 ) , who is poised to curtsy to the princess , and doña María Agustina Sarmiento de Sotomayor ( 3 ) , who kneels before Margaret Theresa , offering her a drink from a red cup , or `` bucaro '' , that she holds on a golden tray .
She has two ladies-in-waiting ( `` meninas '' ) : doña Isabel de Velasco ( 2 ) , who is about to curtsy to the princess , and doña María Agustina Sarmiento de Sotomayor ( 3 ) , who kneels in front of Margarita , offering her a drink from a red cup , or `` bucaro '' , that she holds on a golden tray .