Jordan Pauley finished the scoring with 3:47 left off a corner kick from Braiden Maddox.
Winfield finished with a 20-3 advantage in shots, and that total could have been higher if not for six offside calls against the Generals.
"We worked hard to find these three goals and you'll work for 80 minutes sometimes to find one," Hoff said.
Spring Valley coach Todd Smith said he was proud of his team's effort.
"We went toe-to-toe with the reigning state champions and possible new state champions," Smith said. "They're a very good team. For our program to get where it is today, we've made some great strides and we're very proud of the girls and what they've done to be able to play with them the way they did. A twist here, a twist there, it could've gone either way."
Winfield will now have the opportunity to defend its state title, which was the first the school had won since winning the first three girls soccer titles ever from 1995-1997.
Reach Ryan Pritt at 304-348-7948, ryan.pr...@wvgazette.com, or follow him at twitter.com/RPritt.