>> it was terrifying. and i had to testify. and i met carolyn's family. and jamie's family. they all came out afterwards and gave me a hug. it helped me realize that their families didn't hold any grudge against me. >> it's not her fault that my sister died. and kristin should have no guilt over that. >> with the casey family as witnesses, ynobe matthews was executed three years later. if there is a lesson to take from this story, it is one that comes directly from a survivor herself, someone who has learned the hard way to cherish life's moments each and every one. >> it makes you realize how fragile your life is, you know, and that anybody can take it, you know, in a moment's notice. this story, you know, for them that's it. that's their life story. the final chapter's been written. but for me i get to keep going on.