If California had a law like Florida’s Baker Act, they could have taken her in and disarmed her weapons.
https://en.wikipedia.org/wiki/Florida_Mental_Health_Act
If they had known about her weapon they would probably have taken her into custody or at least confiscated it - unless it was in a locked case and the ammo was in a separate locked container.
New hires have been known to sleep in their cars on the Google campus, shower at the gym and eat for free at one of the numerous restaurants on campus while paying down student debts. She wouldn't have looked that strange to MVPD. A lot of Googlers behave a little bit... abnormal.
5150 baby.
Your link says that even in Florida, the officers would have needed evidence she was either mentally ill, or a danger to herself or others, which it doesn’t seem they had.