Jenny Alexander 
How To Get The Family You Want by Peony Pinker [PDF ebook] 

Peony Pinker is fed up with her family. Her mum »s working
long hours setting up her gardening business and her dad isn »t pulling his
weight around the house, so they »re arguing all the time. Her big sister,
Primrose, is stressed about her exams and taking it out on everyone else
including her lovely boyfriend Matt. Peony »s Gran tells her you can choose your
friends but not your family; as you can »t have the family you want, you have to
learn to want the family you »ve got.  »Not possible! » thinks Peony. But Gran is sure she »ll think
of something. As most of Gran »s ideas go horribly wrong, Peony
knows there will be even more trouble ahead…