The Past, the Present and the Loud, Loud Girl by Karen McCombie
Meet the Love children: oh-so-perfect Linn, airy-fairy Rowan, animal-obsessed Tor - and Ally, trying to have a normal life somewhere in the middle of it all. Which isn't easy when you live in a house that's a cross between an animal hospital and something out of 'Changing Rooms'. And then there's school and the small matter of the forgotten history project and the obnoxious new girl that - oh joy! - Ally's been nominated to look after. It's going to be a fun couple of weeks...This is the first in the wildly successful, utterly loveable "Ally's World" series.