I think when you initially post a question, there is a spot to add tags down at the bottom. It must be harder to do at this point. I noticed that someone (Ellen Smith) retagged your question. (The tags are those words with white print in a green box that are showing up below your query now). I'm not sure how she did that, or I'd do it for you. Tagging is a way of getting the attention of those who would be most interested in certain topics, so someone is more likely to answer your question.
I think, in order to "stir up" more interest, you should pose your question again, giving the additional information that you are sure of now (like Edna's name, her parents, where she lived, etc., and anything else you can add that might give clues to others. Then see if there's a spot down below (before you actually post the new question), to add "tags". (I think it will be right below the post you are composing.)
Add "adoption", and the tags "Scott" "Miles" "Debour" -- and maybe throw in some states you think might be involved.in your family's history again as tags (if you can figure out how when you post again.)
If THAT doesn't work, just ask a different question: "how to add tags to G2G post" and see if someone else has a better answer about how to do that..I wish I was better at all of this, too!