Emily, I found your note while trying to fill in my dad's side of the family which is part of the Galloway family.
My grandmother was Agnes Louise Devlin Plaxco. Your gr-grandmother, Minnie, was my grandmother's half-sister. My grandmother wrote her family history for us. I have a XEROXED photo (1905) that my grandmother copied in her notes that you might be intereted in. Minnie is in the picture with my grandmother.
If you're interested, please write me directly at my email: firstname.lastname@example.org
(I hope you can see my email in this reply, tho I fear it may not be allowed!) I am also on Facebook: Laura Plaxco Ashby
Hope to hear from you!