The Brutal Heart by Gail Bowen

Political commentator Joanne Kilbourn is enjoying married life with her new husband, lawyer Zack Shreve, when the murder of prostitute Cristal Avilia threatens to cause a rift between them. Zack patronized Cristal well before his relationship with Joanne started, yet saw her the day she died because she tried to blackmail one of his friends. When an explicit dvd is sent to her home, Joanne feels she must find out more about Cristal and her death in order to keep her family safe. Meanwhile, for a program on women and politics, Joanne is shadowing politician Ginny Monaghan as she tries to get re-elected, despite being involved in a custody battle for her twin teenage daughters. Again, Gail Bowen has written a mystery featuring all aspects of a woman's life. I especially like the setting of Regina, Saskatchewan and Bowen's descriptions of Joanne's everyday activities.