Weird. As a Vietnamese, I haven't heard of her.
I presume that you were eating in a place called "Loving Hut"? It's a vegan noodle shop chain run by Chinghai Sydney, (the supreme leader that you mentioned).
Found a list of their US restaurant locations.https://lovinghut.us/locations/
I've got some family in Houston TX, so maybe I'll stop in and try it out next time I'm there.