The Terps dropped their first game in nearly a month Sunday after falling flat in the fourth quarter.
Terps players and coaches say Masonius is already a coach in many ways.
The Terps limited the Nittany Lions after surrendering the second-most points in program history to them earlier in the season to secure a crucial victory.
The Terps gave up 52 points in the first half and lost handily to the Hoosiers.
The Terps were outscored 48-21 after halftime.
The Terps restored their winning record in Big Ten play behind a 12-2 fourth-quarter run powered by Jakia Brown-Turner.
The Terps couldn't shut down a strong Spartans offense for the full 40 minutes as they dropped their second Big Ten game of the season.
The Terps held Towson to just 15 points in the first half.
Shyanne Sellers notched her second straight double-double with 13 points and 10 assists.
Kubek missed last year with a torn ACL and came off the bench to start this season. She recently became a starter and has performed well since.