Really,Sirius,Really?

------All characters belong to J.K. Rowling except Kim and other random characters I've put in ---------------

Kimberly Evans is in her sixth year at Beauxbatons when she suddenly changes to Hogwarts school of Witchcraft and Wizardry. She is the cousin of Lily Evans but they both just find out that the other one is a witch.
Meanwhile the Marauders' ring leaders are falling for these sisters. Will they accept love or feign not loving each other.
Meanwhile Hogwarts is under threat........they are constantly being attacked. Will Kim and Sirius stay together or will this year be they're end as they discover horrible secrets about Lord Voldemort.