Here we go:

http://www.eros-dc.com/files/275055.htm

It would be easier for the viewer if the OP included the link in his thread. Anyhow, I was able to narrow the search and found the Valentina he was describing. It was only two Valentina that was available in Tyson's Corner. The OP gave an indicator that she was "super busty". So, I chose the ad that stated "super busty". I myself didn't look into it, but may come back if he doesn't get any responses. I also included both Valentina for you to examine the correct Valentina if I am incorrect.

http://www.eros-dc.com/files/275055.htm
(Super busty Valentina that the OP mentioned in Tyson's Corner. I also think she has been discussed in the past. More than likely she has been discussed in the past, because I remember those big ass titties. I may forget a girls' face, but not those big ass titties)

http://www.eros-dc.com/files/293067.htm
(This is the second Valentina that is also in Tyson's Corner)

How is she like? The reason why I ask is because there seems to be a thread about her every month or so. This way, I can reference it back as to her service, her pictures, and her performance.