Domestic-Abuse Expert Defends Jodi Arias

Defense lawyers' latest witness argued Arias was victimized by the ex she's accused of murdering.
2:08 | 03/26/13

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Transcript for Domestic-Abuse Expert Defends Jodi Arias
Now to the latest on the so-called breakup murder trial. Defense lawyers for jodi arias calling a domestic abuse expert to testify that arias was victimized by the ex-boyfriend she is accused of brutally murdering. Ryan owens has that story for us. The whole truth and nothing but thetruth. Reporte ON MONDAY THEY MET Jodi arias' second and final expert witness. She's alice loviolette eye psychotherapist from california who specializes in treating battered women and the men who abuse them. What kind of therapy do you do now? I do very broad-based therapy. I've worked with companies, high-conflict couples. Reporter: She will testify the admitted killer was a victimof domestic vice and on june 4th, 2008 SHE HAD TO KILL HER Ex-boyfriend travis alexander to protect herself. The simple answer is he attacked me and I defended myself. Reporter: Prosecutor juan martinez will likely be quick to point out she never reported any abuse to police, never told her family, never even wrote about it in her journal. He believes she's a calculating killer who made up the abuse and her self-defense claim to try to stay off death row. I've worked on about 60 cases forens forensically. th THE STAKES COULD HARDLY B Higher after what the prosecutor did to arias' first expert. I'm sorry. I don't see it that way. Right. You wouldn't because you have feelings for the defendant, right? I beg your pardon, sir. Reporter: Martinez shredded the credibility of psychologist richard samuels, who diagnosed arias with ptsd even though she lied to him about who killed her ex-boyfriend. She met that criteria. And you can bang on it all you want and still your judgment isn't it? Of course it's my judgment. Reporter: Even jodi arias herself seemed to object to the aggressive questioning. She knows better than anyone if the jury doesn't believe her or her expert witnesses, she could be sentenced to death. For "good morning america," ryan owens, abc news, phoenix.

This transcript has been automatically generated and may not be 100% accurate.

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