Something Hidden: Witches Rising

Laurel Marshbanks is a Witch. When her sister leaves to take her band on tour around the USA, she is enrolled at Mill Brook Secondary Boarding Academy, a boarding school meant for human teenagers.
Once there, Laurel bands together with the three other girls in her dormitory, who coincidentally happen to possess the same extraordinary supernatural abilities she does.
In time, Laurel and her pals discover unnerving facts about their ancestry and awaken an ancient power, which causes their powers to grow to frightening proportions and evil to be lurking around every corner. They must learn to control their powers before evil makes a move.

Any feedback would be much appreciated