To me, this episode is by far the most revealing and damning incident in the whole book. I judge people by how they treat those they might consider to be 'little people'. Also, I can forgive many things but not cruelty and bullying. I'm very sceptical about whether bullies can really change...'the child is father of the man' etc.
What vile behaviour in the first place, and then how bone-headedly stupid, insensitive, snobbish and sadistic to repeat it so revealingly for this poor woman to have to live through it all over again (with no hint of remorse - that's the chilling aspect). I bet the press will be making their way to her door if she's still with us.
(Btw - I've worked in a boys' independent school, and most of the boys I worked with were kind and polite - often going out of their way to be helpful, and were keen to work with disabled people in the community. So - please don't blame it on his school - some things are just down to the individual being horrible!)
It betrays the fact that Harry is a bully and perhaps his denial of the bullying accusations against him and Meghan may be due to the fact that he doesn't recognise such behaviour as bullying! After all, they're little people - who are paid to follow orders - surely they don't have the feelings of finer folk like H & M.
It's the same kind of logic/insensitivity which allows Harry to enjoy his shooting and hunting activities, I imagine.