First you need your flying powers which you will get from a phone. Fly to the top of the bank. There'll be a little video. When she flies off fly up and dodge her attacks. How you ask Well here are her 3 main attacks.
The 2 by 2 set: When she aims them she will aim them at you of course. Stay in the same spot until she releases them. She does swiftly move to the edge. The rest of the four she releases will follow so flty quickly.
One: Whne she aims one, just sway back and forth dodging her attack.
The row of 4: Just wait. This is just a fear tatic. They will leave an opening. Fly through that opening. If there isn't an opening formed move to the side. Once, they are launched, they wont follow.
HOPE IT HELPS! :D Good luck.