She could have been the real Posh Spice. What a shame, and what a waste. Also, apparently, her columns were ghost-written, so she didn't write a word. I'm sure she could have but she didn't need to. Her poor family - these wealthy folks who send their kids to the right schools and hobnob with royalty, etc, must wonder what on earth they did wrong. Her other siblings did well. Coke should never be a lifestyle choice - it might not kill you at the beginning but the effects of it will get you in the end (stepping off preacher box).
Boarding schools are not dickensian institutions and the particular school Tara PT and sister attended was/is wonderful.
Secondly, the family already knew Charles and the royals long before Tara and her siblings were born. Charles PT met Prince Charles when both were at Cambridge and became lifelong friends. Charles PT was said to have taught prince Charles to ski. There was no need to grift their way into his royal life. And as they married and had kids, those kids grew up together.
Thirdly, the Palmer-Tomkinsons are as close to Charles as the Van Cutsems and have similar history. Unlike the Van Cutsems, they are extremely low key and go about their lives not flaunting their royal connections or joshing to be besties with the next generation of royals even though they are deeply embedded in that world.