Dan, I very much regret putting the Parker/Bluesky story in the Adkins' Family History. For some reason a lot of folks have latched on to that big time. The possibility that your Mary Ann Napier has Indian blood is almost nil. Most of her ancestors have been worked out except for one line on the Napier and one line on the Adkins. When those are completed and they will be, clear proof of no Indian ancestory will be proven.
The features you mentioned are strong traits of the Scottish people. Full blooded Scottish people have almost all the features that American's associate with the Indian.
Finally all one has to do to prove their so-called Indian ancestory is to wait about five years for a complete DNA bank to be built. Then one will be able to know with absolutely no doubt whether or not they have Indian blood. Ronnie Adkins