I’m not an expert on UCs, but I did find the freshman admit numbers for the 10+ honors cohort vs 5-9.9 cohorts, from your link pretty interesting for many of the campuses. I imagine that’s as much about the impact on the calculated UC GPA as an actual 9 v 10 different decision.
Have you calculated the potential difference in the GPA, and where she falls for her desired campuses?
I’d also say students can be very, very different on these decisions. My son would have never considered a class of no interest to boost his GPA. My daughter found an online AP Art History class her school would accept to help in the valedictorian race. She had zero interest in Art History, but wanted the extra AP boost.