In Surrey, the way it works is we have LSPA where all the enquiries to do with SS/SEN etc go. The school seemingly took advice and were told to contact SS. They presumably did because she was 'known to services'.
I think where it went wrong was when they pulled her from school, the process x 2 Surrey have in place either didn't work or SS approved it. Essentially what is meant to happen is 1) team A at Surrey checks that the parents are happy and know what they are signing up for (some think that tutor will be provided etc) and that the child wasn't off - rolled. 2) team B (EHE team) checks that education is suitable. This as I gather includes safeguarding history. I would have though with school notification to SS, her age and background (they marry them off young sometimes), the fact that she started wearing hijab etcetc would have raised some serious red flags.
Her EHE officer would be same as mine, she is nice, but I know that prior to her starting last year they had several positions open and a backlog of kids, who they haven't contacted about.
I know bc my thirdborn wasn't on their radar until this year, even though he finished preschool in Aug 2022.
Since this year they doubled the team so I guess Sara is the reason.
But like people said, it was summer holiday, even being in school wouldn't have helped.
I certainly haven't seen Sara and we walked a few yards to where she lived at least dozen times a week, never met her in any playground or any social groups. She lived a few yards away from a junior school (different one she attended), there are parents always around that area, although again it was holiday, so lots of people away.