She was 98. The NYT carries a faint-praise obit that pretty much reduces her to the Mother of All Art Chicks. According to the obit, she "gained fame only late in a long career" and her work "had a galvanizing effect on the work of younger artists, particularly women."
Right. She raised three kids, which might account for her "late" arrival on the art scene. Her stuff was also frequently completely mind-blowing, but let's not talk of that.
One example: Forty-three tons of steel were required for the Tate Modern's inaugural Turbine Hall installation "I Do, I Undo, I Redo." Galvanizing, indeed.