Next you want to work at the area where her temples are and that yellow crusty stuff on the back of her head and neck.
The yellow stuff is made up of spent plasma, serum exudate and white blood cells. They have served their purpose fighting off possible infection and accumulate as a crusty buildup.
The more that comes off (debriding) the better, as it allows new cells the space they need to take a firm hold and lay down in a randomized pattern instead of following a line into becoming stiff and painful scar tissue.
Using a brush in a circular, massaging motion helps stimulate circulation to achieve this objective.