I know I’m never popular when I comment on these things but as far as the split up goes yes they will feel guilty for not realising just how bad things were for J but when it comes to divorce it’s the kids who are caught in the middle so why wouldn’t the grandparents wanna prioritise them so that having the parents living apart doesn’t hurt quite as much? Just offering a different perspective. Unfortunately the older generation aren’t the best when it comes to dealing with mental health. They were raised in the shrug it off and get on with it era.