Rational Maniacs — T.L. Gardner

Kilandra Remoor has a lot going for her… she's astoundingly beautiful, intelligent, caring, and she owns her own business. Just one problem though… she's functionally insane.
The product of a nightmarish childhood, Kilandra hides a terrible secret buried in the basement of her Suburban home, several secrets actually, all of them dead. Her murderous lifestyle is suddenly thrown into chaos when she meets the enigmatic and handsome, Darnell… rich, mysterious and with secrets of his own. Kilandra finds herself head over heels in love with him, but when a random chat room encounter leads her into a deadly game of tit for tat murder, she finds she has put her new lover's life at stake.
Protecting her loved ones proves to be a murderous affair, and in the end, it's someone else's dark secret that leaves her in a state of shock and could prove to be the end of her…