The invisible force field thing was...weird, but Parker adapted, letting it push her to the ladder. First she just followed behind Brainiac 5, but traveling this way was less than optimal. She pushed off the ladder and forward at an angle, spinning in midair to hit the opposite 'wall' with her hands and feet, then repeating the move again and again to carry herself down the passage at a faster rate -- and, also, making herself harder to hit should there be an attack.