My dead sisters grave

Sylvia was your average tween girl but all that changed when her sister Maya dies from a tragic accident. Sylvia is left feeling like it's her fault because she was with her when it happens and she couldn't stop it.
It's five years later and Sylvia is now sixteen, but still is having dreams about it. The one night when she's out with her friends, Sylvia can't help but feel like he sister is right next to her.

But is Maya back with a vengeance?