Exactly.
Watch videos carefully: she's mocking him in an underhand way that falls just below the radar. In one video I recall you can see princess locking eyes with her mum and both sniggering and trying to stifle it whilst he's rocking back and forth with some humiliating "gift" she's bought him plonked on his head.
I think she's a "feeder" too and enjoys watching him gorge on food that he should have limited with his Prada Willi and obesity. He's a heart attack and stroke just waiting to happen.
Also, there's very much a link with the multiple conditions Harvey was born with and drug taking /drinking during pregnancy. There is evidence of KP doing those things whilst pregnant with him. It's not a totally wild accusation to wonder if her behaviour during pregnancy may have had an adverse affect on a developing foetus. However much people can convey fake shock and awe at saying these things just because they don't like how it sounds.
Some of the pictures of her drunk (and god knows what else ) while she was pregnant with him were saddening to see. Falling out of nightclub's in mini skirts.
It's besides the point I know, but taking a 17yrs old virginity whilst heavily pregnant with another (AWOL) man's baby then bragging about it, shows how much of a priority preparing to be a 'new mum' was for her.
Also Harvey is autistic and has verbal ticks and 'love you mum/mummy' is one of them. If you watch you can see , he says it when overstimulated/excited/nervous and it's unrelated to the context.
Example: "Harveeeey bear, are you going to have your hair cut today ?'
Harvey: "yes mum. Love you mum."
KP" Harvey I've told you about shutting those doors "
Interrupts before she has finished "yes mum. Love you mum " (whilst rocking)
I know it's a tick as my DH has the same one and it really annoys me as there's no sincerity in it.