Fragments of Grey: Book Five of the Alexis Stanton Chronicles

Alexis Stanton remains estranged from her partners at White and Associates. She passes her time without taking any real interest. Feelings of betrayal and misery lead her to thoughts of revenge, but she knows that's not the answer. Revenge will only sever all times Alex desperately clings to. Tragedy opens the doors to a possible return to White and Associates, but the scope of that tragedy doesn't hit home until she actually returns. Now she realizes revenge is the only answer.