M. B Barry 
The Elder Tales [EPUB ebook] 

Maddie Scribble is a young girl with a problem: her best friend has disappeared without a trace, and no one else has even noticed. The worst part is that the only person that can help her is the one person that wants absolutely nothing to do with her, her older sister Lyla.Meanwhile, fairy tale creatures and other mythological beings that really shouldn’t exist have started showing up everywhere and attacking people. Now it seems that the only hope the city has is a fairy that has lost her magic, a goblin with no concept of personal hygiene and two young sisters that can’t stand to be in the same room together.