She isn't going to 'get well'. This is her MO, her way of life.
I don't know her but I know a few who did, a good few years back. (The one who knew her best has never spoken about her, to me at least, but the others certainly did.) She is not 'well' and my guess is that she never will be. All the medicinal rollercoasters in the world won't help and, tbh, I'm not even sure if any of that is true. Her manipulative, psychotic and massively entitled behaviour is hard-wired; it's her true nature and, sooner or later, the gruesomeness will inevitably surface.
The reason she craves public approbation is that when people actually get to know her the scales will, invariably, fall (cf every relationship she's been in and being ditched by people and organisations who have given her opportunities that others could only dream of). Her Twitter following doesn't have to put up with her 24/7 (although it sometimes feels like that!), so they aren't going to experience her Full behavioural Monty.
I do, however, tip my hat to her being a published author. That is an achievement that I wish I could claim for myself, even if her content and recipes are not necessarily my cup of tea.
The best thing for everyone would be to ignore her completely. As entertaining as these threads are (and they really are!), all they do is feed the beast. For her, the most painful thing is NOT being talked about. How refreshing it would be to have her spew her rubbish and for no one to react. It's never going to happen, but it would be to everyone's benefit.