I've been flying when I could for three days now."  Bork, of course, hadn't known of her spell with which she'd forced herself to want him "well and truly." Apparently it had gone on operating even when she thought he was dead, and with a built-in sense of his direction.
Her spell had been on, even when she thought he was dead.
mnli hypothesis: Her spell had been on, even when she thought he was dead. premise: I've been flying when I could for three days now."  Bork, of course, hadn't known of her spell with which she'd forced herself to want him "well and truly." Apparently it had gone on operating even when she thought he was dead, and with a built-in sense of his direction.