This may be the person described in this genealogical sketch.
From pinterest.es/lb3038/historic-embroidery-in-paintings/.jpg. Also posted to the Transition from Ruffs to Collars - 1620 to 1630 Album.
The partlet appears to begin above the under-bodice, form the neckline, and act as the anchor for the ruff.
Keywords: 1625, Susanna van Meckema, vam Meckema family, van Diepholt family, Dutch, frizzy coiffure, hair jewelry, earrings, lace-edged partlet, high enclosing neckline, lace-edged neckline ruff, necklace, under-bodice, fitted bodice, vee décolletage, lapels, lace lining, draped jeweled bodice ornament, brooch, long close sleeves, back-flared lace-trimmed cuffs, bracelets, girdle, basque waistline, bows, full over-skirt, gloves