An incomplete genealogical sketch is here, but a Pinterest site dates the portrait to the 1660s and shows she lived from 1643 to 1680. However, a similar portrait of her mother dates to ca. 1675.
From pinterest.com/nataleto/history-of-fashion-1630-1719-years/. Also posted to Iberian dress in the Louis XIII and XIV eras Album here.
Doña María Josefa dresses in somber black, but leaves no doubt as to her gender with lush hair and bare shoulder neckline. The sleeves, at least appear to have silver embroidery.
Keywords: de Alfaro, de Figueroa family, Spanish, long straight coiffure, headdress, earrings, fitted bodice, off shoulder crescent neckline, lace bertha, brooch, jeweled bodice ornament, three quarter length split puffed over-sleeves, long puffed under-sleeves, lace back-flared cuffs, rings, full skirt, tontillo