ACT vs. SAT

I’m sure this has probably been discussed but I’m new to the game. My daughter is a rising Junior and we aren’t sure which test to focus on.

She took a mock test of each (no studying or prep at all, first sitting except for the PSAT she took in spring) and got a 25 on the ACT and 1250 on the SAT. She’s more of a math/science person. Strongest score on ACT was science (24), and scores were lowest in English (ACT 14) and Reading/Writing (SAT 570), respectively.

Mostly considering UCs, CSUs and a few California privates. Thoughts?