I'm with jingl and others on this one. I'd hazard a guess that some of us have in the past done things they now feel deeply ashamed about. Whilst it's not excusable as such, I'd err on the side of compassion. For whatever reason, she made wrong choices and got carried away, without thinking through the consequences - or maybe she was unable to do so. As jingl rightly says, it's not easy to distinguish whether someone has a mental health problem or an unfortunate character trait. It's a continuum, and even psychiatrists often find it difficult to tell. I speak from experience: my mental health diagnosis has been debated and discussed at nauseum, whilst I continue to wonder whether I am simply an unpleasant and subhuman individual for having the thoughts and feelings I have, who is finding that knowledge painful to accept.
As to the alleged killer of Alice Gross, we might never know the truth, but in this country people are presumed innocent till proven guilty. Try telling that to the lynch-mob media!