Her article in thepeerage is here.
From www.pinterest.com/bearscatlady/miniature-portraits.
Lady Arabella wears her hair straight with bangs ending in curls above a square neckline emphasized by double rows of pearls.
Keywords: Arabella Bourke, Arabella Mackworth-Praed, Mackworth-Praed family, Bourke family, Countess, Lady-in-Waiting, Queen Adelaide, British, straight coiffure, square neckline, bertha, lace, quarter length puffed sleeves, cuffs, waist band, Empire waistline, close skirt, necklace, clasps, brooch, jeweled bodice ornament, wrap