With Washington on limited minutes (illness), SR tried the same small lineup as the Colorado game. Utah scouted that game well and shut down OSU's offense. Putting in Grymek gave Slocum a lot more room to work, and whenever either Washington or Grymek was in, Pivec had a lot more options, too. Utah killed OSU on the boards when Washington was out (11 second-chance points) - Maddie had 5 boards in the last 5 minutes, which made all the difference in the end.
OSU is also short Janessa Thropay, who was the starting 5 at the beginning of the season. I think that if Washington had played her usual 25-30 minutes, or Janessa had been available, it would have been a very different game. Credit Utah for taking advantage.