A Game of Murder — Elise M. Stone

For the third time in less than six months, Faith Andersen, self-professed computer nerd and skeptical Christian, must solve a murder.
Mira Levinson dared to challenge the local gamer club's male brotherhood of geekdom. She wrote a game about feelings. A good game. For that she had to die.
The police are focused on the wrong suspect. The police are focused on one of Faith's friends.
The future of more than one of her friends is in jeopardy. Driven by her desire for justice, Faith must find out who killed Mira. Without dying in the process.
Or losing the love of her life.