Her Wikipedia article is here. Her daughter Leonora Christine became famous when her memoirs were published in 1869 (not a typo).
From arslonga.dk.
Countess Kirsten is wearing an English-style wheel farthingale and a post-Elizabethan collar and lapels decorated with lace in this 1623 van Doordt portrait.
Keywords: 1623, van Doordt, Kirsten Munk, Munck family, Oldenburg family, Countess, Danish, straight coiffure, ribbon headdress, neckline ruff, lace, collar, trapezoidal neckline, partlet, bows, tabbed sleeves, vee waistline, hanging sleeves, false sleeves, cuffs, wheel farthingale, full skirt, necklace, jeweled bodice ornament, bracelets