It is horrifying to think that this murderous (obviously psychopathic) woman used to work as a nurse. Her employment was terminated because of her drinking habit. I pity her poor unfortunate patients. I think she would have been a heartless nurse, completely lacking in compassion and absolutely no empathy. I am glad they were both caught sooner - than later. They are both still relatively young and could have gone on murdering for a lot longer.
They are two psychopaths who found each other - like Myra Hindley and Ian Brady, and Fred and Rosemary West etc etc