Hello everyone! I'm trying to tie up some loose ends with the few resources that I have. I'm looking for my gggrandmother, Elizabeth Ross. Here is the info that I have.

She was born in Cooper Co. MO about 1840 to James C. Ross and Joanna (Johanna Lowery). She is on the 1850 Census for Dist. 23, Cooper Co., the 1870 Census for Index, Cass Co-Rose Hill. Sometime around 1870-73, she married someone by the name of John Thomas (who I'm also looking for, have no info), and had a son, my ggrandfather, James Washington Thomas on Aug. 14th, 1873. In 1874, she died. This is where my problem lies. I cannot find any info for Elizabeth other than what I already have. I don't know what she died of, I can't find obits anywhere, and I can't seem to find her in any of the Missouri cemeteries I've done research for online. Could someone out there help me? I would be most grateful. Thanks!