From a link on her Wiki page:
After the verdict was read out, Carty says she went numb. "I was devastated and started shouting, 'I'm not guilty - I wasn't even there', but at the same time part of me accepted it because I'm also a pragmatist. If you have ineffective counsel and the state presents its case you can't get mad at the jury for making a ruling or a judgment based on what they've heard. Nobody was there to plant any reasonable doubt. None of my witnesses had been contacted and my family wasn't even interviewed." There are two people - whose names Carty will not reveal - who can, she says, provide the alibi she so desperately needed at her original trial.
----------------------------------------
That's the part I find perplexing. If I was looking at the wrong end of a lethal potassium chloride injection I'd feel a little compelled to produce their names.