Thank you, Laura. This afternoon me and my family went to a flea market, because the weather was so nice today, and I started rifling through one of the many bins of LIFE magazines I saw, and lo and behold, at the bottom of one of the bins I found the Oct. 18 1963 issue with the article on this woman. It was VERY interesting, and I read it in the car. One of the things that amazed me most was how her account of the execution was so similar to Yurovsky's, (right down to the chair being brought into the cellar room for the Tsarevich) yet she had no way of knowing about his Note, since it wasn't brought from the archives until Radzinsky came across it.
She also resembled Alexandra in this pic:
Eugenia: 
Alix: 
and funny how her 'rescuer' was also named Alexander, as was Anna Anderson's rescuer.
Abby: I find Eurgenia Smith one of the most interesting of all the clamants. I feel entirely sure she was not ANR.
However, her story, as I have pointed out before
entirely fits the known evidence in this case in a way no other one does.
What does this mean? As you point out, the Yurovsky note, which corroborates much of the tale, was not in the public domain at the time. And, the Yurovsky note and other Bolshevik sources as they differ with those known sources (Pavel Medved, for example) is nearly the only corroboration with Smith.
Smith is the only source who explains the two missing bodies in a manner different than Yurovsky. What are the possibilities for the authorship for Smith?
1. Member of the Imperial Family. (Unlikely, although maybe a short term survivor?).
2. Yurovsky or a member of the Lenin clique trying to stir the pot among emigres?
3. A very lucky fabrication that just happens to have the number of missing bodies exactly correct and identified? (And the only one published in the West prior to the infamous Note.)
4. The rescuer "Alexander" himself. We know there were a number of Imperial Army officers in Ekaterinburg at the time.
What we do know about Smith after her brief publicity in the 1960's:
1. She remained in the Eastern United States
2. She had a small group of supporters.
3. She refused free DNA testing when it was offered.
4. She died in the 1990's.