Even if she had every single illness she claims to have, all diagnosed and legit - he still didn't have to stay married to an abusive, violent woman with alcohol issues. No one has to. The supposed illness here is nothing to do with anything. We can see for ourselves he's supportive of a partner with chronic illness. He tried to support Alice for long enough, after all. Even if he didn't think her illness was legit, he still provided a nanny, a housekeeper, comprehensive health care, enough money for food delivery services, and seemingly no pressure to go out and work. That's surely the bleeping DREAM if you have an exhausting chronic illness? Other than feeling better, obviously.
BIB - This is why she's so angry, over two years later. Her meal-ticket/easy life has now gone.
She's not upset he left her, but that the amenities and lifestyle he provided have gone. And this is why there's so much rage. Because if she ever truly loved him for who he was, she wouldn't be acting in this way. She feels she's 'owed' her lifestyle. She knows no one else will ever pay for it.
She never appreciated him for who he was. To her, he was just a maid and bottomless wallet. She had a handsome, kind and talented man, and she blew it.