Cäcilia Schumacher was a Swiss artist from the Lucerne region born in 1841.
Unfortunately we do not have more detail about her life and work.
19th Century Ink and Brush drawing
A group of Swiss peasants rest on the edge of a lake on their way to church. This is probably the church at Ringgenberg on the Brienzersee (Lake Brienz) near Interlaken.
Some light spotting