The picture might be a vaction photo or some personal picture like that, not a planned photo for the newspaper. Look at the quality of it - it obviously wasn't taken very well, and the rest of the pictures don't match that quality in other articles. Not only that, but the camera strap is in the picture. I highly, highly doubt it was taken professionally. Maybe she submitted it herself, but they theoretically could of pulled it off a social site somewhere, since the couple were obviously internet savy and on some social websites. There's also no quotes from her, which suggests that maybe she didn't know about the article. If you look at the article that this one cites, all of the records are from the trial, not from her. There's nothing indicating that she's proud, although if she was, that's her right; she caught her husband before he could potentially hurt more girls.
As for it showing her bust - it covers a good bit of it, actually. If you look, she's obviously fairly large and sagging somewhat; her nipples probably are no where near the neckline. I've seen much skimper tops all the time.
Could the article do without the picture? Yes. But that's the paper's fault, not hers.
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"Nothing worth having is easy."
Three years!