Infinite Acumulation! At 89 she must have a great deal of skill and experience accumulated!

‘Also featured was an exploration of infinite space in her Infinity Mirror rooms. These typically involve a cube-shaped room lined in mirrors, with water on the floor and flickering lights; these features suggest a pattern of life and death’.

In 1973, Kusama returned to Japan in ill health, where she began writing shockingly visceral and surrealistic novels, short stories, and poetry. She became an art dealer, but her business folded after several years and in 1977 Kusama checked herself into the Seiwa Hospital for the Mentally Ill, where she eventually took up permanent residence.
She has been living at the hospital since, by choice.[31]Her studio, where she has continued to produce work since the mid-1970s, is a short distance from the hospital in Shinjuku, Tokyo.[32]Kusama is often quoted as saying: "If it were not for art, I would have killed myself a long time ago."’.

I saw a reference in the paper: