Nope. She was in Brussels till at least '97.
First, the C.I.A. suspected that Aldrich Ames had given Mrs. Wilson's name (along with those of other spies) to the Russians before his espionage arrest in 1994. So her undercover security was undermined at that time, and she was brought back to Washington for safety reasons.
Second, as Mrs. Wilson rose in the agency, she was already in transition away from undercover work to management, and to liaison roles with other intelligence agencies. So this year, even before she was outed, she was moving away from "noc" — which means non-official cover, like pretending to be a business executive. After passing as an energy analyst for Brewster-Jennings & Associates, a C.I.A. front company, she was switching to a new cover as a State Department official, affording her diplomatic protection without having "C.I.A." stamped on her forehead.
http://healthandenergy.com/outing_of_valarie_plame.htm