Quite so, Virginia: which illustrates that BR was right to point out that OP had used the wrong word, as she meant "raising" [making higher], not 'highering' which, as you point out, means rising higher]. It was arguably ill-mannered, as you claim, to raise the point; but your supposed demolition of his point proves the opposite to what you intended.

As to the topic of the thread: this silly woman Atkinson seems to imagine that 10-year-olds are incapable of recognising that beating a little boy to death with a brick and leaving his body on a railway line to get cut in half by a train is a verryveryveryvery NAUGHTY thing to do. I knew that when I was 10. Didn't she? Didn't you? Didn't everybody?