Is Eddie's wife Margo in this?

I'm watching this movie right now as part of the tribute to the Eddie Albert film festival on TCM. I think I spied his wife Margo as one of the dancers but don't see her listed anywhere.

Can anyone comfirm or deny she's there? Is it true that those who did not speak in a film were not listed in the credits?

What a talent Eddie was, in so many way.