To answer Invisible: Ruth was depressed after the guy with the autistic son died. So she hung herself. Luckily Abs and Toby decided they wouldn't take no for an answer on Ruth going to the pub with them, so they went to her room and forced their way in after they heard her pager ring and not get answered. Hope that helps.
Oh well, I recorded it and WAS going to watch it, which is why I opened this question in case in case I knew it when watching. Not much point now is there though............