I seem to remember this story popping up on the news every few months before she was eventually taken into custody and then put on trial. The police kept on arresting her on suspicion, taking her in for questioning and then releasing her, before a few months later doing the same again. I'm not exactly sure how many times this happened, maybe two or three? I remember thinking at the time something seemed odd, in that if they had enough evidence to arrest her why was it taking so long?
To convict someone of a crime I thought it had to be beyond reasonable doubt and from what I've heard about this case there appears to be a fair bit of reasonable doubt.