Erin Tack scored a career high 19 points, Alexis Klevin hit six 3-pointers and Kelso stayed alive in the 3A bi-district tournament in Lakewood.
Klevin, who has 18 points, made three 3-pointers in the third quarter as Kelso opened a 43-30 lead.
Kelso (16-8) will play Wilson in a winner-to-state, loser-out game Thursday in Lakewood.
KELSO 63, PENINSULA 41
KELSO (16-8) — Josie Ahrens 0, Alexis Kleven 18, Cooper Joy 9, Erin Tack 19, Evermore Kaiser 4, Mati Ohlson 0, Natalie Fraley 7, Madison Harkins 4, KK Perez 2, Lexi Grumbois 0. Totals 23 (11) 6-7 63.
PENINSULA (11-11) — Lovrovich 11, Doss 1, Smith 0, McKinney 1, Waage 2, Bauer 18, Lamanna 2, Zimmerman 3. Totals 15 (5) 3-12 41.
Kelso 12 12 19 20–63
Peninsula 12 9 9 11–41