police station ruins

Sterek AU/ Katherine Derek AU

Katherine is Sheriff’s Stilinski daughter from relationship with another women a long time against Claudia. She visits her father and meet Derek of course. And Derek walk her up to the Police Station Stiles ruined moment of they goodbye. Derek seems don’t care about that he’s was on the date ( and start to fall in love) with Stiles’s half-sister. But Stiles seems to have another opinion about that what he saw. And definitely his rage didn’t was result of caring of the sister. 

My… My Own Sister… 

My Own Sister with him… With fucking him!

Damn! You pay me for this, sis!