What was the purpose of this test? The question appeared and wouldn't leave Shizuko's mind as she ran. That was not a useful question at this time, and it wasn't her duty to second-guess her instructors. It was, however, her job to achieve what they set before her.
Her attempt at finding her way rejected, Shizuko frowned as she continued tracking the fleeing figure that she thought was her instructor, tracking her own bearing relative to the paths as she did. The realization that the figure she was chasing might also be a decoy (a solid one this time), made her pause, though. She slowed to a stop, letting gravity regain its proper hold.
There was another way around this. Both paths led to the same destination. That meant that she could assume that the paths formed a loop: each began and ended at the same location as the other. So, by traveling between them, by angling herself down the center, even if she was off, she would still travel a shorter route than by following the longer trail, even if she did travel further than the shorter trail. That was unlikely, unless it was a straight line. Or significantly shorter, with the two trails arriving opposite each other. Re-calculating her trajectory, Shizuko set off again, again using her gravity manipulation to reduce her weight to aid her speed.
She was well on her way when Frejya screamed. No. She was out of range. She couldn't stop; even if Shizuko did turn around, this was a time-sensitive objective and she couldn't be sure that she could help Frejya anyway...
The excuses didn't settle her enough, and Shizuko turned around and headed toward the source of the sound.