Hi I have recently changed jobs to become a HOD (new to the role) I worked previously in an outstanding school and my marking was always fine never any problems rated outstanding twice. In consecutive ofsted inspections. Since the new job I had some personal stuff going on and got behind by a coulple of weeks in my marking I went to my boss ( upper middle management position but not SLT) to tell her and she seemed supportive but basically two weeks later threw me under a bus at appraisal time. I grinned an bore it as I was behind but did feel that I was punished for asking for help. Anyway it's now a year later and due to another teacher leaving this year she is teaching half of her timetable in my subject and I am required to monitor her work. We are pending ofsted and so she (as upper middle management) has asked to review all year 9 books I duely ensure all my year 9 teachers leave them in the relevant place and in doing so notice her classes are missing. I go to the class to carry them along and discover they are not marked since the start of the year. My SLT link hates her (they had a horrid personal issue a few years ago) and so I feel like i am betraying her to say anything but I don't feel comfortable raising it with her ( or even know if I should) I have since been denied my pay increment to UPS2 because of my marking being behind in the last appraisal cycle ( despite making over a 10% improvement on GCSEs performance since last years results. ) what should I do?