Ella Bergmann-Michel (October 20, 1896-August 8, 1971) was a German abstract artist, photographer, and documentary filmmaker.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Ella_Bergmann-Michel

Fischlein Rot Stech Dich Tot by Ella Bergmann-Michel / 1918
Pen and India ink and red ink, gold paint, gouache, watercolor, pencil and printed paper collage on paper
19-5/8″x16-1/8″ / Private collection

Ella Bergmann-Michel on Artnet: http://www.artnet.com/artists/ella-bergmann-michel/

Further reading:
http://www.getty.edu/art/collection/artists/1522/ella-bergmann-michel-german-1896-1971/
https://www.artsy.net/article/jshtngn-collagestudie-horizontal-1926-and-the-lost-work-of
https://festival.ilcinemaritrovato.it/en/sezione/la-donna-con-la-kinamo-ella-bergmann-michel/