The mysterious new girl

This is my first story so I will do my best and please only constructive criticism in the comments! Warnings: death, suicide, self harm, swearing, and blood.
This story is about a sixteen year old girl named Aris. Her parents were killed during a mugging and she had been living with her aunt C ever since. She was only fourteen when she lost everything. She traded out her bubbly, happy go lucky personality and became cold and distant.
When a mysterious girl suddenly joins Blue Bird High, Aris' once upside down world was altered for the second time in four years.
If you want to know more then you will just have to continue reading! :)