Ofsted really is a completely flawed process of inspecting schools. They visit for two days and usually don't come back for five years or more. I have heard of inspections taking place over a couple of days, when half the school and various leaders were on a residential. They couldn't tick all the boxes, so the school was downgraded. Likewise Ofsted have inspected when half the staff were off as a virus was going around. They watched supply teachers teach and said the children weren't focussed. It's just ridiculous and sets up a culture of fear, where perfection has to be seen by the powers that be (and Ofsted on inspection day!), when actually we are dealing with human beings.
Each school should be properly supported to improve by a team of suitably qualified professionals, attached to a school, who get to know the school, the area, the children, the parents etc. These professionals should visit regularly, monitor teaching and learning over a longer period, support and place demands to be met if need be. They can advise on how to meet these demands, where to get help and the rest of it. This can all be done without the need to completely slate a school and it's staff in public.
If a school really is in chaos, and things don't improve, I understand the need to have a process in place to replace failing heads. But Ruth wasn't a failing Head. The parents were happy, the kids were happy, and Ofsted slammed and downgraded the school. She simply could have been advised of what needed changing, given a few weeks to do it, all away from the knowledge of the public and her life saved.