Since she is a Junior and has another year before college applications, I would have her take either the SAT or ACT just in case she changes her mind in the types of colleges she plans to apply.
With the competitiveness of the UC’s, there is no guarantees so she may want to broaden her college list.
2021 Admission Rates are below:
Admission Rates for California Applicants:
UCLA: 10.1%
UC Berkeley: 16.8%
UC Irvine: 20.1%
UC Santa Barbara: 28.0%
UC San Diego: 28.5%
UC Davis: 39.0%
UC Santa Cruz: 54.5%
UC Riverside: 64.0%
UC Merced: 99.7%