Donna Rae Williams, 51, makes a first appearance in court May 31 on a first-degree murder charge. The YWCA of Clark County’s SafeChoice Domestic Violence Program provides aid to victims. The phone numbers are 360-695-0501 or 800-695-0167.Defense unclear in hammer killingWhether Donna Rae Williams is a domestic violence victim who killed out of fear for her life or a cold-blooded murderer will likely be determined inside a Clark County Superior courtroom. But what is clear about Williams is, when she allegedly struck and killed her husband Mark with a hammer last month, she became a statistical anomaly.In Washington, less than 10 percent of domestic violence homicides between January 1997 and June 2010 resulted from a woman killing a man, according to the Washington State Coalition Against Domestic Violence.Nationally, women were responsible for just 11 percent of homicides in the U.S. between 1976 and 2005, according to a U.S. Bureau of Justice study. Only 3 percent of male homicide victims between 1976 and 2005 were killed by an intimate partner, the same study revealed.Williams is charged with suspicion of first-degree murder in the death of her husband, Mark, whom she was married to more than 30 years. She reported his death on Wednesday, May 30, but it is believed, based on statements she made to authorities, that he died May 14 inside their home in the Sifton neighborhood.Williams told detectives she suffered years of verbal abuse and at least one unreported physical assault, according to a probable cause statement. Her husband punched her in the eye the night before she killed him, Williams said. The altercation began when she confronted him about cocaine use, she told detectives.