Elizabeth actively investigated the case on her own. She became convinced of Todd’s innocence and was instrumental in helping his family find an expert fire investigator to examine his case. The investigator found no evidence for arson and sent a report to Governor Rick Perry. However, the State failed to halt Willingham’s execution in 2004. Further arson investigations have also found no evidence for arson.
Frontline has an interview on their website with Elizabeth. Below is an excerpt in which she talks about her meeting with Todd's former wife Stacy:
Can you describe your meeting with Stacy?The annual march is a joint project organized by several Texas anti-death penalty organizations: Texas Moratorium Network, the Austin chapter of the Campaign to End the Death Penalty, the Texas Death Penalty Abolition Movement, Texas Students Against the Death Penalty, Texas Death Penalty Education and Resource Center, Death Penalty Free Austin, and Kids Against the Death Penalty. Other sponsors include Journey of Hope...From Violence to Healing.
Stacy came in, and I felt that she was very genuine, and I think this was the first time she had really talked to anybody outside [of the official investigation]. ... But to me [she] was just like, "Oh, sure, I'll meet you; I'll tell you this is the truth." ... I told her I was a writer; I'm from Houston. I interviewed her; I taped her. And she seemed kind of reserved, nervous, just a person who had a lot of tragedy in her life.
I had heard from Todd that her mother had been murdered, and she had been there. So it seemed like her life had been filled with tragedy, ... and she seemed genuinely to feel Todd had not done this. ... She really convinced me that she felt that an injustice had been done. … She didn't feel like he was capable of doing that.
So you believe Stacy told the truth?
Yes, I really do.
Do you remember how she said it?
… She cried, and I just remember her saying, "Todd is not capable of doing that," just acknowledging that he loved his children. I sensed this very pained individual. ... After the conviction, and after Todd was on death row, Stacy decided to get a divorce. She didn't visit him on death row.