Don't discontinue the riding lessons, just make sure she is properly attaired for the ride... lol.
You are more than welcome, and of course you undertand this is only my opinion...others may have less demanding standards when it comes to sources, although I doubt it.
From what I have been able to find out about Zella, she began compiling her "Notable Southern Families" as a family history of the Armstrong family lines of descent.The actual genealogical work was carried out by her uncle, Robert Armstrong in the late 1890's and early 1900's.All the family papers are contained in a collection intitled: The Coile Grace Armstrong Collection, at the Chattanooga, Tenn. Library.
This may have been Zella's first foray into the field of published family histories, as her first several volumes were privately published by Lookout Publishing from 1918.That in itself raises a warning flag in my mind, as self published books really lack the stamp of approval in the genealogical field.Anyone can write a family history, and as long as they have the money to pay for the publication, it will be published and offered for sale.
I agree to some extend with you when you say, "I feel sure she didn't make it up", but the thing to remember here, the sources she was working with were private family papers compiled by her uncle, and if he were still alive at the time she published...she may have been restricted in what she could edit or not.It does appear that some of the sources were fudged...which actually is not unusual for the time period of publication.Exactly how many people who may have purchased her books during that time period do you think had the resources to verify the correctness of her citations, not many.Usually, the people who purchased these book in the early 1900's were not interested in sources, only in the content of the book, and of course that it proved they had either a noble or royal descent.
As far as I have been able to find out, this was the only publication that Ms. Armstrong made into the field of actually lines of descent, as all her other publications dealt with public records during the revolutionary and civil war periods.
I am advising anyone who wishes to use this work in their family genealogies as a reference, to add a ceavat as to the sources and embellishment which it contains.