The Suns would score 140 in the next two games.
Sun scored her second of the night, on a penalty kick in the 72d minute.
The Suns have scored at least 100 points in each of their playoff games.
Charlotte led by 33-28 at halftime, but the Sun scored the first 8 points of the second half.
The Suns scored on their first nine possessions of the game and never trailed.
The Suns did not score their first basket of the quarter until 7 minutes 37 seconds remained.
Los Angeles led, 27-22, before the Suns scored the final 6 points of the period for a 28-27 edge.
The Suns scored efficiently during overtime by making baskets on seven of their first eight possessions.
A team that thrives in transition, the Suns scored only 2 points on the fast break in the half.
But in all, seven Suns scored in double figures.