Realistically she smells like a lot of things. >unwashed hair.
Like how a girl's hair smells after camping for a few days. not gross just a waxy, musky, sebum smell.>Cedar
She is a lady of standing in the 1800's she probably keeps her clothes in a cedar chest to prevent mildew and to impart an earthy woodsy scent to her clothes.>Perfume
Rich white lady in the 1800s>Bad breath
Again 1800's probably no such thing as crest and sonicaire in Arrendelle.
Or she could just magically ice power her cunt stink away