Rotate into the left hip, not the knee, to stop the hook
The speaker says the finish should not turn on the axis of the knee; instead you go into the left hip and turn it. She notes that in her own driver swing a hook miss comes from finishing with the power of the calf in the heel, and says when the finish goes in that way the hook comes out. The correction she emphasizes is turning into the left hip through the finish.
Channel: Golf with Aimee
Watch official source at 3:41