How could EP not believe that someone with so many issues who was at the end of her tether, not do a thing like this ? How could Ferguson believe that she couldn't ?
Except Colin who knew her best when he told the officer that " she'd finally done it ".
How did they know she has 'so many issues' - Jeremy told them
How did they know 'she was at the end of her tether' Jeremy told them
How could they not believe it when - Jeremy told them.
Ferguson believed she couldn't because he was her psychiatrist, he had listened to inner most secrets and fears and he knew she was medicated
Colin was referring to her 'killing HERSELF' NOT killing the rest of them and certainly NOT the twins. He accepted it because that's what he was told, he was told of a phone call in which Nevil (allegedley) accused his daughter of 'going crazy with a gun'. But again, we only know this because - Jeremy told them!