These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Malory Towers
Family-Unfriendly Aesop: Zerelda's plot arc seems to come down to "If you have a dream, then when a teacher tells you that you don't have any real acting skills, just give up, it'll be better for you in the long run. Don't even try to, for instance, go to a special school to really try to learn- nope, just give up your dream and go do your homework."
Hide Your Lesbians: Bill and Clarissa. YMMV on this one because, though it's a widely accepted fan theory, it's not canon. They're both explicitly mentioned as being very tomboyish (Bill more so), and when they grow up instead of going to university and getting married like the rest of the girls they run a stables together.
This is Enid Blyton's work, from the fifties. There's almost no chance that this is anything more than the tomboyish friendship it outwardly appears to be - Clarissa isn't even all that boyish; she just likes horses, as Bill does.
Too Dumb to Live: Amanda. She went swimming in the sea despite being warned that it was incredibly dangerous and that there was a fast current. End result: she nearly got killed and her career as an Olympic swimmer was over before it had begun.