A Most Improper Magick -by Stephanie Burgis (paperback)

At twelve years old, any proper young lady should be sitting quietly at home, practising her embroidery, learning French and keeping her opinions to herself. But Kat Stephenson is no ordinary young lady. Kat’s father may be a respectable vicar, but her late mother was a notorious witch, her brother has gambled the whole family into debt, and Kat herself is the newest target of an ancient magical Order. Now Kat is ready to do whatever it takes to include her newly acquired magical abilities to rescue her family from destruction.