The Little Girl

It's about a 18 year old girl that realizes she can see ghosts,but not any kind of ghost but the ghost of her dead....sister.Her sister died 4 years ago in a drive by shooting.Her sister didn't come back to catch up, her sister came back to tell her that she was in danger and the danger was going to be coming from her best friend.

What will happen will she trust her dead sister or her best friend?