UCLA pulled to 11-10 after an outside shot by Kacy Swain, but the Bruins' poor shooting in the first half cost them. UCLA shot only 29 percent (9 for 31) in the opening 20 minutes.
Alyssia Brewer and Markel Walker, two of the Bruins' top three scorers averaging a combined 22.7 points per game, went scoreless in the first half, shooting a combined 0 for 7 from the field. Nyingifa's 10 points led the Bruins at the half.
The Bears had balanced scoring in the opening half as all eight who played scored at least two points. Brandon led the way with 10 points and Gray had eight.
Cal finished the first half strong. After the Bruins pulled to 20-16 with 7:01 to play, the Bears got hot, taking their biggest lead of the half at 37-18 lead on a 3-pointer by Mikayla Lyles with 52 seconds until the break.
Brandon's outside jumper at the buzzer gave the Bears a 39-21 lead at the half.
Cal hasn't lost since a defeat to No. 4 Stanford on Jan. 8.
"We want to become part of the nation's elite," Gottlieb said. "We want to make a name for ourselves. But you do that by taking one small step at a time and taking care of the business in front of you. But those increments, I hope, are saying we're for real on the national level."