Definition of "unprotestingly"

The blowfly was her next victim, but an unexciting one. Pulling off its legs, she placed it with the hornet, and both lay side by side unprotestingly.

1907, Barbara Baynton, edited by Sally Krimmer and Alan Lawson, Human Toll (Portable Australian Authors: Barbara Baynton), St Lucia: University of Queensland Press, published 1980, page 168