I have a copy of Angels and Women, but not of Selma. It is definitely a bit of early science fiction, of the kind I found fun to read when I was growing up. It may have seemed a bit strange at the time it was written (about 1870 or so) but it is not the 'inspired by demons' book that some have made it out to be. H G Wells novels aren't much different.
i also have a copy of Atla by the same author, mrs JG Smith. She was Ann Eliza Brainerd, wife of JG Smith who was a very wealthy railroad baron and one time governor of Vermont.