Humboldt. Definitely a residential college environment, artsy & outdoorsy community. A pain in the rear to get to from southern California, but there are always kids who are ridesharing coming and going. Really nice community & Arcata is definitely a college town. Link: https://www.humboldt.edu/student-life
It definitely would be very different than what your D1 experiences at UCLA however-- small college in a rural community vs. large urban environment.
Also, don’t give up on the UC’s yet. Your daughter’s 3.6 GPA along with reasonable test scores might make her a very viable candidate for the less competitive UC campuses – Santa Cruz, Merced, Riverside, maybe Santa Barbara. So familiarize yourself with the math used to calculate an academic index - see http://admission.universityofcalifornia.edu/freshman/california-residents/admissions-index/index.html – if her PSAT puts her in range of qualifying then a test prep course might be a good investment.