Katherine "Kate" Mohr - Kate Law was the daughter of Adam Mohr according to her death record.

Here's some more interesting information. Kate Law was mentioned in the obituary of her brother, John C. Mohr, who was born 13 Jun 1867 in Mt. Forest, Illinois and died 03 Aug 1956 in Chicago, Cook, Illinois. The death certificates for Kate and John C. Mohr share the same birth location (Mt. Forest, IL) and the same father's name (Adam Mohr). It should be possible to find autosomal DNA matches between Kate and John's descendants. It's interesting that the obituary mentions another brother named George. Perhaps he has living descendants as well.

Please note that Henry Mohr of Shabbona, DeKalb, Illinois did not have any sons named John C. or George.

Sources:
Death Notices, Mohr, John C. Mohr. Tribune, Chicago, IL. 04 Aug 1956, Tuesday, p. 21. Available on NewsPapers.com. https://www.newspapers.com/image/372911494/

Death record for John C. Mohr: https://www.familysearch.org/ark:/61903/1:1:QVRN-DHS8

Death record for Kate Law: https://www.familysearch.org/ark:/61903/1:1:QV9N-XQJB

Sourced genealogy profile of Henry Mohr of DeKalb, IL: https://www.wikitree.com/wiki/Mohr-722