ST. PAUL, Minn. — Brooke McQuigge and Michela Cava scored two goals apiece on Sunday night and the Minnesota Frost beat the Toronto Sceptres 7-5 to take a 2-1 lead in the best-of-five semifinal series. The Frost, who tied the series with a 5-3 win in Game 2, can advance to the PWHL championship with a win in Game 4 on Wednesday. Liz Schepers, Lee Stecklein and Sophie Jaques also scored goals for Minnesota, and Taylor Heise had three assists.Anna Kjellbin scored her first PWHL goal with 14:13 left in the game to cut Toronto’s deficit to 5-4, but Cava answered with a back-hand goal less than two minutes later and then scored a power-play goal to make it 7-4 with 10:39 to go. Maddie Rooney had 18 saves in her second consecutive win for the FrostDaryl Watts scored for the Sceptres with about five minutes left in the first period. Maggie Connors added a goal early in the second and Kali Flanagan’s goal made it 5-3 going into the third. Blayre Turnbull capped the scoring with 7:56 to left in the game. Kristen Campbell had 17 saves for Toronto. After Schepers opened the scoring 2:33 into the game, McQuigge and Stecklein scored 52 seconds apart to make it 3-0 a little more than five minutes later and the Frost never trailed. The Frost was 2 for 4 on power plays while Toronto was 0 for 2. Minnesota has converted 5 of 9 power-play opportunities in the series compared to 2 of 6 for t …