I haven’t rewatched so can’t remember it fully but I remember at the time very much feeling she was bringing other housemates down with her, bringing out nastiness they might not have shown. That’s not to excuse them, we are all responsible for our own behaviour, but I felt like she brought out a nasty side to people that they might not even have known they had. Don’t ask me who though cos I can’t remember anything about the series, I just remember that was my opinion on Grace! I thought the same about Helen Wood, that some people might have acted nastier than they would have because of her.