Batsheva (Epshtein) Neviazhsky - Last Name

Epstein and Epshtein seem two different spellings / transcriptions of the same name -- and that was the surname of both her father and husband.

Chase A. G. Guttman - Geni shows you entered "Neviazhsky" as her Last Name back on Apr 30, 2011.
Do you recall why? Is there any documentation for her last name being "Neviazhsky" or??