Or was a jack move, she wonders now, simply a cash-related move? Jack in the sense of money? Donny's jack moves had tended to be invoked in situations of relative economic insecurity. Donny's ongoing situation being one of that, but to greater or lesser degrees. Resolved most often by asking Cayce for a loan, but only after invoking the jack move. If it meant a money move, she guesses she can't use the expression, because what she's tempted to do would just cost her.