The host Orange (18-3) is going to the final four for the third time in five years after Michelle Tumolo scored with five seconds remaining to give Syracuse a come-from-behind victory against the Tar Heels (15-4).
With North Carolina leading 16-14, Tumolo started Syracuse's comeback when she scored at the 9:24 mark.
On the next possession, Tumolo found a wide-open Kailah Kempney, who scored to tie the game with 39 seconds remaining.
Kempney won the ensuing draw, which set up Tumolo's game-winner.
The Pioneers (17-3) scored seven goals over a 13-minute span in the first half and and held on to defeat the Golden Rams (16-4) in Louisville, Ky., and win their third NCAA Division II championship.
West Chester made a late push, scoring five of the final six goals of the game, but Jackie Sileo, who set an NCAA championship game record with nine points, scored with 3:44 left to give C.W. Post a 17-15 lead.
Salisbury 15, Middlebury 7:
Lauren Feusahrens had eight points on five goals and three assists to lead the Sea Gulls (22-0) past the Panthers (15-5) in the semifinals in Montclair, N.J.