Although Julia has detailed knowledge about the threat of the Diamond and Rachel has none, she stops short of overriding her daughter, which shows her great (and perhaps unusual) respect for Rachel’s autonomy. While in the past Betteredge was caught between his (supposedly evidence-based) belief that the Indians were innocuous and the Diamond could not be “cursed,” now this has switched: Mr. Murthwaite has given him cause to believe the whole family is under threat because of the Diamond, while
Robinson Crusoe has told Betteredge not to worry. In short, Collins has flipped the previous association of irrational or religious belief with the Indians and rational, verifiable belief with the British.