One is too many in my opinion.
I wholeheartedly agree, however I think we've got to be careful to not make glib statements (not saying you are by the way) that hide away from reality.
The British legal system is far from perfect, and as such there'll sadly be examples of a miscarriage of justice. Yet, from experience, it's mostly a solid system.
The police investigate, the CPS decide on charges (not the police as many believe) and you still have to face a JP or for indictable offences a jury.
As technology improves and judicial systems tighten alongside shifts in perception, which they certainly have, the likelihood of serious examples will fall.
Hopefully, one day, there'll be none, but in reality that likelihood of that having soon is slim, unfortunately. But, let's not digress from today's example.
She has been found guilty of seven separate charges of murder, with their own evidence, as part of the longest murder case in UK history with huge focus on it.
We must hope and believe that the triad mentioned above have met the threshold in their own individual remits, and that this case is solid.
In terms of the attempted murder charges, if you've worked within the system it's often very hard to prove such a crime, hence why it's often charged as...
... GBH with intent. If there weren't so many cases, I suspect that's the avenue the CPS may have taken, and may still do so.
She is not mentally ill mate otherwise she wouldn't have stood trial. Prison only for her. Got to be the clearest case in history for a full life sentence to be honest.
It all depends on what definition of mentality ill you use: the social, medical or legal sense. Her actions as evidenced in court show that legally she ain't.
Medically, well she may one day be seen as mentally ill (e.g. having a mental condition - Munchausen syndrome by proxy et al.), but right now she isn't.
Socially, she's bang to rights on that one in my eyes - acting in a way that does not conform to the social norms of society in a far and extreme way.