Anything said to a teacher would be taken very seriously indeed and dealt with by the safeguarding lead at school ,nothing would be thought less credible at the time of telling. If she was losing weight the school would take action.The neighbours spoke about seeing her with the younger children ,so it sounds as if she was kept In a locked room for any length of time,though we do not know what happened In the days before her death.
In the BBC link post previously it states.
Det Supt Chapman said officers wanted to build a picture of how Sara -
a Year 5 pupil at St Mary's C of E primary school in Byfleet - had lived.
He said: "We're looking to hear from anybody who lived in the area who regularly saw Sara going about her daily routine.
"Any parents who may know of Sara from school or other regular activities. Any parties that might have gone on out of school, or anyone who had any form of contact with her really, no matter how insignificant it might seem."