Odd, I fondly remember him mentioning her, and how important she was as a voice of reason to him.

Update: I went looking for sources in the PDF, I've add them to the parent post. She was mentioned frequently.

I actually even recall this story about the Auroras, but I cannot remember where I've heard it.

While Richard Feynman's anecdotes are great entertainment, after a while you realise that the common theme is how great Richard Feynman is.

Well isn't the book just a compilation by RF's friend, constructed from interview sessions?

I'm sure RF had a healthy ego, but I don't think he can be blamed entirely for this feature of the book.