The win gives the Lady Titans, who are ranked 6th in the state, the sectional title.
"I think that once the game got going, the girls understood how important this game was," Notre Dame Coach Darrell Keller said. "But they stayed relaxed and got the job done. I was proud of them."
Notre Dame (20-3) got off to a fast start and scored six runs in the bottom of the first inning thanks in part to a 2-run home run from Jen Arnzen.
"I was just wanting to give us a boost," Arnzen said. "After that we just kept the momentum going."
That was the case as No. 1 seed Notre Dame scored five more time in the bottom of the second inning while pitcher Miranda Pauley settled in on the mound, and allowed three hits.
"She did a great job today," Keller said. "She kept her confidence the entire day and her focus was between the lines."
Pauley ended the day with five strike outs.
Katie Stevenson and Tori Harr each went 3-for-3 for the Titans.
South Webster — 000 00 — 0 3 0
Notre Dame — 65 0 0x — 11 13 0
South Webster — Messer 1-3, Hawkins 1-2, Maynard 1-2.
Notre Dame — Stevenson 3-3 (3B), Kayser 1-3, Harr 3-3 (2B), Arnzen 1-3 (HR), Marting 1-2, O'Neil 2-2, Morgan 2-3.
WP — Pauley
LP — Ellifritt