If you mom insists on carrying scissors, I'd recommend blunted tips. Anything that can be used as a weapon can be considered a weapon in the wrong circumstances, especially in Kalifornia. Like a screwdriver in your pocket when it's 3am, your pants are droopy, your hat is sideways, and the po-po is around the corner. I really doubt your mom would ever be in any trouble carrying scissors, unless she's carrying them into a courthouse or something. But every day you hear about retardedly outrageous stuff like, for example, a 60 year old woman pulled over for failing to signal a turn, then arrested for carrying a concealed deadly weapon (such as scissors in a purse).
I know that just about anything can be used as a weapon. A stiff-soled boot, the bag of golf clubs sitting on your back seat, a Ford Excursion, etc. So trying to eliminate anything potentially dangerous to appease Ms. Feinstein and her braindead ilk is basically impossible. But limiting sharp metal objects that might be outside the law seems doable and logical.