How does The Idiot(s) celebrate Dostoevsky's wife's essential role?

The Idiot(s) puts Anna Dostoevskaya, Fyodor's wife and stenographer, at the centre of the story rather than treating her as a footnote, casting Aimee Lou Wood in the role opposite Johnny Flynn's chaotic, drunken Fyodor [1, 2]. Reviews describe her as the devoted, steadying force who props up her volatile husband, with the film built as a two-hander that gives her narrative equal weight to his [2, 3].