Otherwise, it is completely fine to take a bunch of fragile girls, many of whom have immediate family at the San with TB, and put them all living together!
Ah but the air is so good they'll soon not be fragile any more!
I think the Jo and Robin bit that annoyed me most is the one which involves Stacie in I think Chalet School and Jo.
Jo's been told that Robin is potentially showing signs of TB, and is worried. She immediately blames Stacie because she "caused" the party to be late back from an expedition the previous year and Robin worried all night.
That it was her fault is definitely debatable, because all she did was pull back from being offered help, and unfortunately that caused Miss Wilson's bad ankle to flare up so they were slow, and had to shelter in the inevitable storm that was coming. They clearly wouldn't have got back all the way before the storm hit anyway, and if they'd been more understanding of Stacie, then she probably wouldn't have refused help.
When Jo's told about Robin (which again I question the wisdom of telling her and let her fret when they get the result a week later. Surely with Jo's "sensitive" nature it would be better to see first) her response is "I know who to blame". And she's very off with Stacie for the rest of the trip.
Then when she's told Robin is fine, Stacie approaches her and says that she knows she would have been to blame if Robin had been ill, then Jo airily says that wasn't the case at all and she shouldn't blame herself. And Stacie "bears a huge gratitude to Jo for saying it."
But it is totally clear that if Robin had been found to be ill, she would have continued blaming Stacie, probably quite nastily from what we see of her behaviour.
In the same situation we also have her telling Marie, and Frieda and telling them not to tell Simone. They're meant to be a close set of friends, and Simone can feel excluded anyway. That would have been really hurtful to Simone if she'd found out. She probably could tell that they had some sort of secret that week anyway.
It made me suspect that Simone's "fusses" about Jo were probably really down to her being treated as an outsider when things mattered, rather than it being in her head as it was often portrayed.