Which preposition to use with subconsciousness

with Occurrences 2%

She never let a conscious thought dwell on itand like all other repressed and strangled currents of thought, it grew swollen and restive, filling her subconsciousness with monstrous, unformulated speculations.

of Occurrences 1%

But the countess, in one of those sudden meditative silences during which she seems to retain only a subconsciousness of her surroundings, refused the offer of warmth with a shrug of her shoulders.

Which preposition to use with  subconsciousness