Books by Sarah the Duchess of York - Anyone from England? Or A Royal Family Junkie?

[Former Teacher]

I am a HUGE royal family fan. I am starting to collect children's books that are authored by Sarah the Duchess of York. I want them for my great niece. I just started but so far I have Royal Switch and Bright Lights.

I know she has several characters: Little Red, Budgie etc.

Does anyone have an opinion on them?

Thanks!