[Kiemyster]

man. ive got an older sister... but we both share the passion for cars... so i dont mind lending her my car.

i understand what your situation is. you need to pull your sister aside, and just talk to her calmly. dont be agressive in the conversation. be like: look, im not blaming you for damaging my car. i didnt appriciate how you lied to our dad... for you have broken my trust with him, and now you have broken my trust with you. so i ask you, for the benifit of the family to call him and be honest.

now, while saying that, you should have like 2 rats in a shoe box. if she goes psyco, let them loose in her room. when she goes anal, say: remember? i told you i had rats the day you came back with my car destroyed.....

and the situation will solve itself. good luck getting through with this without killing her. and lets see a pic of her?