UCs are not “very tippy top schools” in selectivity (except perhaps some majors at UCB and UCLA), but their standard conditions of admission include no worse than a 3.0 GPA in previously reported senior year courses, with no D or F grades. So straight B grades would be right on the edge at UCs (which are obviously not the OP’s daughter’s ED school, since none have ED). But if she would be on the edge of rescission at schools that are not “very tippy top schools” in selectivity, then she may want to be more concerned about her senior year academic performance.
What conditions with respect to senior year academic performance does her admission offer specify?