Theresa Sherry scored five goals and Whitney Miller added four to lead Princeton to a 16-2 victory over the Tar Heels.
The 14-goal margin is the most lopsided loss for the seven-year-old North Carolina program. It is also the second largest margin of victory in a national semifinal, falling one short of Maryland's 19-4 win over Loyola in 1994.
Princeton (18-1) dominated Friday's contest from the start.
Sherry opened the scoring at 1:23 into the first half.
Five different Tigers scored to build an 8-goal lead before the Tar Heels (17-3) even got on the board.
Lindsay Stone broke up the shutout with a goal at 27:16 of the first half. The score heading into halftime had Princeton leading the Tar Heels 8-1.
The second half began much like the first, with Sherry scoring her second goal 1:10 into the period to give the Tigers a 9-1 advantage.
Following a North Carolina goal, the Tigers answered with two of their own just 13 seconds apart to push the score to 11-2.
Just after Sherry netted her fifth goal of the match, the game was interrupted by thunderstorms, which prompted a 65-minute delay midway through the second half.