wikipedia.com- In Obsidian Butterfly, Anita travels to New Mexico to repay the favor that she promised Edward at the end of The Killing Dance. Edward wants Anita to assist in a set of apparently supernatural attacks that have left numerous victims dead, and has skinned alive many survivors.

In the course of the investigation, Anita learns more about Edward's personal life than she ever has before. She meets Donna, Edward's fiancee (in his civilian identity of legal bounty hunter "Ted Forrester") and Donna's children, Peter and Becca. She and Edward also come into conflict with a number of mercenaries who work for Edward's former boss, "Van Cleef," allowing Anita to learn a few clues about Edward's former life.

Anita also comes into contact with a number of possible suspects and sources for information: the Aztec vampire and purported goddess Itzpapalotl; her priest and human servant Pinotl; local Ulfric, Roland, and Roland's necromancer/vargamor and local tough guy Nicky Baco.

Ultimately, Anita learns that a second Aztec vampire/god, Red Woman's Husband, is awakening in New Mexico. After sleeping for centuries, Red Woman's Husband began awakening when Riker, (Harold's boss) raided his tomb, stealing several jade idols. In order to finish his awakening, Red Woman's Husband's priest and his animal servant have been skinning and killing the people who bought the idols stolen from his tomb, animating the skinned corpses as servants.

Riker takes Becca and Peter hostage in an attempt to force Anita to protect him from Red Woman's Husband, but Anita, Edward, and Edward's associates Bernardo and Olaf rescue Edward's family and kill everyone involved with their kidnapping. Anita is captured by Red Woman's Husband, who plans to consume her life energy to complete his awakening, but with Itzpapalotl's help, she is able to kill the vampire instead.

Realizing that Edward loves his soon-to-be family in some way, Anita leaves them without interfering and returns to St. Louis to begin work on her own romantic relationships.