Stop me is book #1 Michelle Jester's the RUE the DAY series

STOP ME

For fifteen years, Jeselle has waited for revenge. 

After moving to a new city with her parents as a teen, Jeselle Parsons quickly found friends and a life full of money, power, and privilege. Even though her parents weren’t wealthy like the other kids' parents, Jeselle felt lucky to be welcomed into the circle of friends, until she learned how costly that type of life could be. A life that would cost her everything.

With the help of her friend Dennis, Jeselle worked to ensure nothing would stand in the way of her revenge on the people who played a part in ruining her life.
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All the years of planning, all the years of working, have all come down to this. Her enemies will learn that revenge has never been so cold.