After Annika had picked up and absorbed her movement speed perk, she was able to move slightly faster whenever she wanted. From this evidence, Bruno was able to figure out that he was actually wrong about her super power.
Her super power wasn't related to speed, but to space warping instead, and a bit of teleportation. Basically, she could walk through the fabric of space, and perhaps, create wormholes that can shorten her traveling distance and time. But that's something only possible for the future, because as of now, her abilities are just the basics, just like every ascender's abilities.
For now, she could only create small wormholes for herself, which, technically, makes her abilities similar to instant teleportation.