I remember this story too, but to be fair I also remember her spending hours signing almost every night after Streetcar last year, and I remember very very cute and sweet stories from fans who were genuinely moved by their meeting with her.
I think it’s a matter of moment. Trying to catch her while she’s working might not be the best moment. And again, her walking under umbrellas to hide from 5 people seem a little bit extreme to be her own choice. I think Fox is trying to maintain the secrecy around this season as long as possible, which is also why she didn’t interact last night.