Am i considered a dayouth?

(My english is not that great, i will try my best) as the tilte says, am i considered a dayouth?, if my sister wears something that i think is not appropriate for anywhere? And i have told her not to wear those kind of stuff and cover up a bit, i have advised her alot and wont listen, since her clothes have become a bit better but not perfect. So regarding this situation, am i considered a dayouth? Since i dont want to be harsh or aggressive towards her.

Thank you.