SACRAMENTO, Calif. — Lauren Betts and her fellow UCLA seniors wouldn’t allow their season to end short of the Final Four. Betts had 23 points, 10 rebounds and five blocks to help UCLA rally from a rare halftime deficit and beat Duke 70-58 on Sunday, advancing to the national semifinals for the second straight season. “I was pretty mad, didn’t like how that first half happened,” Betts said. “I could have been a lot more effective. A game like this you got to take yourself out of your head. This