The new marauder

Summer Brown has always been a rebel, and being expelled for the third time isn't something her family is happy with. But after a tragic murder that kills her whole family she has no one to turn to except an old family friend Albus Dumbledore. She has to be careful, with a powerful wizard on an uprise and a prophecy with her name on it, it's going to be a bumpy ride. So travel with Summer as she makes fast friends with a certain red head and even faster friends with a certain group of trouble makers...