'Holly' is the third book in the series of three
Holly takes over the writing of Lisa, Jody, and her own adventures. Now they've discovered how to teleport themselves, the three girls spend rather less time flying, but as they can't teleport to somewhere they've never been, being able to fly is still an advantage. It's a good thing Jody learned how to fly a plane, the three girls combine to rescue one out of control with no pilot. Holly has to deploy her secret weapon when the girls are asked to protect a notable figure, the Prime Minister no less. All three of the Angels get a bit damp when the river floods, but not nearly as damp as their friend Louisa. It's not only Jody who has an imaginary world in her head, Holly seems to have one too - and then there's Lisa!
This is Holly's bit of the story, from her point of view.

Here's the actual book.
lisa
jody
and
The three disgraces
A series of five books by Ian Berry
Holly