Under Her Spell — K.L. Cerra

A woman who returns to her hometown to investigate her childhood friend's disappearance soon finds herself embroiled in a deadly web of half truths, cover-ups, and dark magic.
 
On the surface, Liv Edwards has a near-perfect life -- a handsome new fiancé, an apartment in Boston, and plans to launch a career in law. No one would suspect how hard she's worked to conceal the strange darkness that often bubbles up inside her. But Liv's polished façade threatens to crack with the arrival of a letter from her childhood best friend, Sam. The chilling message is folded into the shape of a heart like the notes they passed in high school: I need help. 
 
Liv is still haunted by what she did to destroy her friendship with Sam. High school was hard enough without having to start over in a new town, but with Sam, Liv grew into herself like never before. Now Liv resolves to do right by Sam -- except when she returns to her small New England hometown, she is too late.
 
Sam has disappeared and clues suggest foul play. To add to the mystery, Sam has transformed over the years, living with the odd girls from high school, Eden and Cora, and working at their esteemed bridal boutique. Liv reconnects with them in search of answers. With couture gowns, exquisite cakes, and a glittering display room, these women make fairy tales come to life, and Liv, too, can be a part of it all. But as Eden and Cora teach her to harness the qualities that have always made her feel different, Liv discovers that a much darker reality may be lurking beneath the satin and pearls -- and within herself.