MINOT, N.D. — Dickinson junior Reagan McMahen seems to have her fingerprints on just about every game this season for the Mavericks. Most of the time, it's from inside the pitching circle. But on Friday afternoon, with Dickinson's season on the line, she did her damage with the bat. Tied 3-3 in the bottom of the seventh inning, McMahen ripped a single through the left side of the infield, driving in the winning run and sending the Mavericks to t…