The Terps were close to downing the Nittany Lions earlier this season, but they fell short, suffering a reverse sweep on Sept. 29.
Dowler had spent the matchup setting up her teammates to score, but when the Terps needed a spark, she delivered.
The Terps easily dispatched the Spartans behind Csire's 19 kills and earned their third straight conference win.
The Terps will seek their third-straight win against Michigan State on Saturday.
The Terps won their second straight game for the first time since Sept. 24, beating the Scarlet Knights in straight sets.
Csire had five kills and two service aces in the third set to turn a close match into a Terps victory.
The Terps dominated late in the fourth set to end their road trip to Michigan on a high note.
The Terps fell to 2-5 in Big Ten play with the loss.
After a recent win broke a four-game skid, the Terps are hoping to begin another hot streak on their road trip to Michigan.
After a bitter defeat against Northwestern, a victory against Indiana was exactly what the Terps needed.