A Dutch-language Wikipedia article about her in-laws has a section about her. Her genealogical sketch is here. She is not from a titled aristocratic family, but bankers can fill in in a republic.
Utrecht is a city and province of The Netherlands.
From Wikimedia.
Portraits from this period show gold jewelry. The broad shoulders come right out of a period fashion plate.
Keywords: 1834, Kruseman, Olga Emilie Borski-Sillem, Sillem family, Borski family, neo-hurluberlu coiffure, knotted bun, earrings, chemise, off shoulder straight neckline, fitted bodice, lace-edged epaulettes, dual upper puffed sleeves, lace-trimmed outer sleeves, tight cuffs, braceletsjeweled bodice ornament, natural waistline, full skirt, wrap