For example, Sheehan calls her Humanities Gallery of 2013 a 'non-site' like Andre Malraux's 'Museum without Walls' where she has displayed a glass spiral splintered to symbolise broken promises.
As visitors walk on the glass path they inevitably break it and contribute to what Sheehan describes as a 'protracted entropic metaphysical disintegration that reveals a regenerating geometry and an architectural allegory underfoot'.
Sheehan has said the influence for her work called Glass Garden was the Russian architect, Vladimir Tatlin's experiments with extending spaces from a solid base.
This work is seen as a celebration of shared ideals where space 'unspools from a cracking constructivist composition and the spiral is reminiscent of capitalism in crisis.
'[citation needed][5] Broken glass is an ongoing feature in her work, from early installations at the Orchard Gallery, Derry (1989)[6] to Ocean Floor (1990) which both use automated windshields.