While the Gaels shot just 23.4 percent from the field, SMC hung around the entire game, chipping away and getting the deficit down to eight on several occasions.
Jasmine Smith was the lone Gael in double-figures with 12 points, while Jackie Nared added eight points and 11 rebounds. Carli Rosenthal finished the game with seven points and nine rebounds.
The Gaels held Oregon State to just a 31.7 percent clip and forced OSU into 15 turnovers. OSU was led by Earlysia Marchbanks with 14 points and 15 rebounds.
Saint Mary's cut the 16-point deficit down to 38-30 with 9:39 remaining after Smith got to the line and sank two free-throws. SMC had chances and good looks to cut the deficit down further but it was not the Gaels night as not many shots would fall.
SMC was down by 10 points when it decided to try and foul and hope OSU would miss free-throws down the stretch. The Beavers did miss fire on a few free-throws but once again the Gaels found it tough to find the bucket.
Smith finishes a brilliant three years on the SMC campus with 1,371 points, good for ninth all-time in SMC history.
In the first half, the Gaels shot just 25.9 percent while attempting just two free-throws. Rosenthal was the only Gael to make multiple field-goals and led SMC with five points and five rebounds at the break. Oregon State shot 35.5 percent and withstood an 8-0 SMC run toward the end of the half and led 27-18.