What should i do about my friend ?

eh maybe , its out of my hands now

So what's happened then?

i know most people don't want to be seen as 'snakes', but i think she should report it to the biology teacher, or to another member of staff. if stuff like this isn't nipped in the bud, it escalates, and your friend shouldn't be given the opportunity to make her feel more uncomfortable than she already does.

idk , why do u care so much

nosy init