I read several Jacqueline Wilson books as a notional adult - it was possible to pick one up when we got home from school "just to see" what my daughter was reading, and get through all of it in an hour or so before I had to be grown up again and sort out food and stuff like that.

Yes, she is an excellent writer - her books managed to be about "issues" without ever being preachy or dull, and that's brilliant :-) I probably have mixed them all up in my head though - because I read them in a hurry and didn't ever reread them or devote much thinking time to them.