The transcript in the link is wrong, but the video has more of the context:
http://www.firstcoastnews.com/news/topstories/news-article.aspx?storyid=154169&catid=3
Listening to the video this is what I think they're saying, more or less:
Hank: I tried to tell you. I know I tried to tell you. But no, you had to do your own thing just like you always had. Well, it's too late to cry over spilled milk anyway, so just forget about it. We all gotta do what we gotta do. I don't understand why this is all happening, but it's happening. Don't cry.
Misty: I hate this, man! They're trying to ruin our whole lives.
Hank: Yeah... whoever did this to Haleigh is the one that ruined our lives. And
they better hope
they find out before I do...
Misty
They're trying to ruin our lives.
They shouldn't be ruining our lives.
They didn't ruin the person's life that did this, not ours!
The last sentence didn't come out quite as she wanted to, I think... but anyway, it seems clear to me that
"they that ruin her life" in her opinion and "the person that did this" are separate, not the same folks.