pls urgent help for my safety as teen girl

im living in italy and im the only non-white in my whole year except a muslim hijabi northafrican
girl in my class (we have js one classroom for all subject so the classmates i have i will have them for the whole 5 yr of secondary school). She just found out i smoked in the school trip she didn’t attended to, that was in march.

there is no surprise that the whole town will know that and also back to northafrica since she know my family live near hers. i just meet her this yr snd made my life fucked up, she keep judging me for knee shorts during pe, for not putting the veil etc…

Please help me i feel so alone, im currently shaking and i just throw up i dont know what to do, i told my classmates but they don’t know the weight of reputation that muslim have, my family will be isolated from everyone.
i just message the girl that told her, that the gossip she said will put me in dangerous and i text her a sincere long text i dont know if that is enough or its too late.

im accepting every support