Williams added 16 points and 10 rebounds for Duke, which won its 36th straight ACC game at Cameron Indoor Stadium and hasn't been beaten by a conference rival at home since Maryland did it five years ago.
Katie Rutan had 14 points and hit four 3-pointers for Maryland, which rallied from 10 points down and tied it at 33 on Rutan's 3 barely 2 minutes into the second half.
It was remarkable that Maryland was even in the game because Hawkins' stat line was so empty, thanks to the defensive efforts of Williams, senior Allison Vernerey and junior Haley Peters.
Hawkins finished with six points on 3-of-11 shooting and seven rebounds — well below her averages of 19.6 points and 9.9 boards — in her first game in single-digit scoring since St. Joseph's held her to two points in November.
"Tianna had an (atypical) night . but knowing Tianna, she'll bounce back," Frese said. "It was a game where our bigs didn't get a lot of touches in this game, in terms of the pressure they faced all night."
Turnovers also were once again a problem for the Terrapins, who entered averaging 17½ and finished two shy of their season worst of 26 set against Connecticut. Pavelich had nine of them.
"I don't think it was them that made us have those turnovers," Rutan said. "I think it was just us rushing, not playing our game. We can fix that. That's easy."
Duke never trailed and twice led by 10 during a sloppy-at-times first half in which the Blue Devils managed just two field goals in roughly 11 minutes.
Liston twice pushed Duke's lead to double figures, the second time coming on her jumper with just under 5 minutes left in the half that made it 28-18. The Terps clawed back and cut it to 30-28 on Malina Howard's running jumper in the final minute, and it remained tight until Gray almost single-handedly broke the game open.