Murphysboro, Illinois is located in Jackson Co, IL. I looked at an index to 1908-1910 deaths in Jackson Co and did not see the name Jane or Jeanie Wallace.
Dear Pat Galovich,
Thank you for posting your request on History Hub!
The Illinois State Archives and FamilySearch Wiki provide information about Illinois death records. Additionally, you may wish to search for obituaries by contacting local historical societies and libraries or by searching online newspaper databases such as the Library of Congress’s database Chronicling America.
We hope this is helpful. Best of luck with your research!