I Doubt that Her "Expert" Will Even be Allowed to Tes
She needs expert testimony to back this claim. In order for the expert to be qualified, he/she has to meet the Daubert standard which means that there are clinical studies or scientifically reliable studies to back this. California is a Daubert jurisdiction.
An errant expert is not enough and anecdotal evidence is not enough.
In 100 years, she might have the experts (but the statute of limitations would have run). Today, I don't think she does.
I'm also wondering whether Santa Monica has governmental immunity. Then again, the attorney who unsuccessfully sued Mel Gibson over hidden anti-semetic messages in the movie Drive is the first cousin of my old boss and a once a year sushi buddy.