There is a lot of speculation here about her income.
What's visible on Companies House may not be everything she does. But she is listed as the Yorkshire Shepherdess Ltd.
There may be other companies for the B&B and they could be listed under her H's name.
Media work is not that well paid. I have friends who appear on TV (not as celebs but as experts) and the fees are poor. I'm also an author (and have friends who are authors) and can confirm that unless you have a really good publishing team behind you, the publicity has to be initiated by you. It's down to authors to set up their own book signings, talks, appearances in local papers.
She possibly got decent advances for her books but not 6-figures- many advances are a couple of grand these days and the rest is royalties.
I don't blame her for cashing in on it while she can.
What I take issue with is her inference that a lot of children are 'snowflakes' with 'helicopter parents'. Some are, yes, but some are neglected and far from that. And most are somewhere in the middle.
I suspect that having married young and lived on the farm since then, her own exposure to other parents and their kids is limited, especially as her family is very self-contained and she doesn't even go to parents' evenings.
Being outdoorsy and working the land may be ONE way to develop character, but it's not the only one. But she implies it is.