Wow. I'd love to hear anything you can report about what Dorothy MacGowan says. If there is a q & a and you feel moved to do so, I would love to have you ask MacGowan what her memories were of working with Grayson.
Just so you know, Grayson is in the very beginning of the movie, and then there's about 45 minutes until her next scene. A lot of the movie is a rambling pop-culture kind of filmic collage, sort of like the Beatles "Hard Day's Night" or "Darling" with Julie Christie or other films of the mid Sixties that had a certain Beat/Pop edge to them.
G.