The two teams close out the weekend series Saturday in Mendota Heights with the puck drop at 5 p.m.
A freshman, Solheim has scored a goal in five consecutive games.
St. Thomas (17-0-2 overall, 11-0-2) pushed its 14-month unbeaten streak to 32 (25-0-7).
Coach Tom Palkowski's squad recorded its school-record 10th shutout of the season. The previous record for the Purple was nine shutouts in 2008-09. The Tommie defense has allowed just 12 goals in 19 games.
The Toms kept a two-point lead atop the MIAC standings on second-place Hamline, a 10-0 winner over Concordia.
Torpy (14 saves) played in her 93rd career game. She improved to 61-17-12 on her career (17-0-2 this season).
Senior Heidi Hannula played in her 100th career game for the Purple.