Posted by Ducatigirl, a resident of the Old Palo Alto neighborhood, on Dec 17, 2012 at 3:20 pm Ducatigirl is a member (registered user) of Palo Alto Online
One of the articles I have read stated that the mother was a "doomsday prepped", and possibly unbalanced herself, as she believed that the world was on the verge of economic collapse. She collected high-power weapons and practiced target shooting but did not have her guns locked up.
My son read on Strat-For that she was actually afraid of her son and had tried to have him committed to a mental hospital on several occasion. But that involved calling police, and she did not want him to have a criminal record(!). Her other son left home and never returned, and refused to have contact with his younger brother.