Dealing with depression

A girl named Aria who is 17 is from a big town has been dealing with depression for a while and no one understands what's she goes through people at school call her names, random people from social media sends her long paragraphs about how much they hate her, girls wanna fight her, and people make fun of her scars on her wrist. Let alone she's the only one who knows how to feel this way. Every night in her room crying for no reason she gets more scared every time because she doesn't know what's she's crying about
Maybe she just needs someone in her life to make it better