Well, today she's evolved to throwing chairs at him, she's posh now, you know (and instead of telling her off for it, he ran and immediately ordered her a new chair, this is domestic violence 101, the need of the victim to apologise to the spouse for making him/her angry). And we all know how she loves to ridicule him, so nothing's changed.
Their relationship is as healthy as her eating habits. Of course Jonathan knows she's back at it, does he care? Probably. What chance does he have to do something about it? Zero. Anna is in this way too deep. Jonathan should've told her she's beautiful when she gets healthy a decade ago. Instead, he told her he "likes them small" and that her "cellulite is gross". He was 27 years old at that time and said this to a 19 yo girl... Every woman knows we don't forget those kind of things, ever. The damage is done.
Still, now that children are involved and they're loaded, she has absolutely no excuse not to get help. But the truth is that Anna is an empty shell, never evolved, never went out there in the real world, never formed friendships, learned about herself and others, never was told 'no' or 'enough'.
They're co-dependent, she needs him to live her sheltered live far away from reality somewhere on Instagram, and he needs her to proof to the world that the guy all the others laughed at and made fun of at school scored a pretty blonde who popped four kids out for him, oh and he drives a Ferrari, lads. It's obvious why neither of them can get better as long as they're each other's crutch.