Hair not moving with imported model

I’ve applied motion and Digital Soul to the CC4 Model “Susan” into Unity. When the character tilts her head, the hair and eyebrows remain stationary.
I’ve tried attaching in Unity the hair objects to the Head and neck bones, without success. Might there be a known fix to keep poor Susan’s wig on straight? :face_with_open_eyes_and_hand_over_mouth: