Which preposition to use with superstitiousness

of Occurrences 1%

Only a certain sort of infantile superstitiousness of nature remained in her, and made her cling to the forms, in which, though she knew they did not mean what they pretended, she suspected there might be some sort of mechanical efficacy at last; like the partly undeceived disciple and assistant of a master juggler, who is not quite sure that there may not be a supernatural power behind some of the tricks.

Which preposition to use with  superstitiousness