I found out Virginia’s full (married name) in an article here:
http://www.suntimes.com/news/politics/obama/familytree/545468,BSX-News-wotreeq09.stng
her last name now is Virginia Goeldner and she and her husband as previously stated live in north west Arkansas. I will have to keep looking for the original article which appeared 11/18/2008 in the nw Arkansas newspaper, I have not had much luck thus far, sorry.
Its interested, that in this interview she described Lolo Soetoro as a Hawaiian:
http://www.nlrtimes.com/articles/2008/11/14/maumelle_monitor/living/liv01.txt
Also quite a bit about the families history.