Y/n Milkovich is the little half sister of Mandy Milkovich. She's not really related to Mickey or Terry, 'cause Mandy's mom cheated on terry and that's why Terry hates Y/n really much. She's been always good with the Gallaghers.With Kev and V to. She's 16 years old. Her best friend is Debbie Gallagher, she's 17. Carl and y/n don't get along well. Carl is together with Domenique. Debbie is still together with Derek. TW: Drugs/Alcohol/Raping/Guns