Mmmmm it's so good when he does the voice. "Yes, Master."
She's on the floor, her destination is on the floor, crawling only makes sense. Also it's hot. Also she expects him to enjoy it. She indulges in one longing glance back at his cock as she goes, because she expects him to enjoy that too.
So she said 'fetch them' but they currently only need one; it's probably a good idea to keep the rest in a known location where they won't get, say, tangled up in his pile of clothes and disappear. Leaving them in the backpack would kind of contradict what she's been told, though, and that's uncomfortable even though it's fully within the spirit of his orders. She glances around for a solution to her problems, and sees the nightstand, not far from where John is standing. Perfect.
Box of condoms in hand, she crawls three-legged back to John, takes out a condom, reaches over to put the box on the nightstand, and takes a moment to gaze worshipfully up at his cock before she rises to an upright kneeling position and gets to work. Her fingers tingle with pleasure where they touch him. She has practiced this technique on carefully selected cucumbers and does an excellent job of rolling the condom down slowly as instructed. It would be inappropriate to get distracted daydreaming about what if the pleasure of touching him was mind control instead of a natural consequence of how into him she is, but she does file that thought away for later.