Whether it was the Independent mode or the assisted mode, attacking and moving were two completely different things.
It wasn't that these two actions could not be completed simultaneously, but that the preparatory movement for a player to attack required them either look downwards or to draw their bows.
It was hard to multi task. Preparing for an attack while moving would mean that you weren't paying attention to your surroundings. It was only natural that players would pay extra attention to the movements of a boss during a fight.
But this lady was simply not looking at the attacks that were coming from Gasol, drawing her bow without a care in the world. But right before Gasol's attack struck her, she would always dodge it by a hair's breath in the last possible second. This lady really was confident in her dodging abilities.