As well as being is considered a pioneer of modern Central Swiss textile art,[2] she is known for her murals in plaster technique, sgraffito, and mosaic.

[1] In the mid-1920s she belonged to the "Urner Kreis", which formed around the German Expressionist artist de:August Babberger.

[1] In 1932, she and August Babberger painted the Höfli Chapel in Altdorf, Switzerland.

[2] One of her Trachtenteppich (traditional carpet) was exhibited at the 1937 Exposition Internationale des Arts et Techniques dans la Vie Moderne in Paris.

[2] From 1946 to 1967, Schillig was head of the textile department at the Kunstgewerbeschule (School of Applied Arts) in Lucerne.