She died at St Mary Abbots Hospital, Paddington in London, having suffered a sudden brain haemorrhage,[4] Biggar's sculptural work was undertaken in a variety of media including plaster, clay and stone.

Another subject was her sister Mary, and also her uncle John Biggar, the result of which was exhibited in 1935 at the Royal Glasgow Institute.

[3] After leaving the Glasgow School of Art, Biggar met Norman McLaren, with whom she shared political views.

[6] They then collaborated again in 1936 on Hell Unltd, a non-narrative protest film attacking government spending on munitions as opposed to healthcare and welfare provision.

The first, unpublished, work, Traces Left, served as the source material for a documentary made by the Birmingham Film Workshop in 1983.