I don't want to sell my dad's precious car to help my sister
Why won't you help your sister?
She is so annoying! She's still in high school and can't manage money.
What about your parents? Will they help instead?
She's asked already and they've said no. She's such a pain in the ass to everyone around her.
Maybe your sister has friends she can ask to borrow money from seeing as how her family doesn't want to.