My pleasure. Back in the day, she went by D.C. Fontana (that's how she was listed on the credits) though it might be redundant to say this to anyone familiar with Trek history. Yes, Susan... its been awhile so I forgot who the actress, but not the character naturally. I think Majel was actually her body double when the Talosians had her looking like an Orion woman and Majel is taller than her too.
Its been awhile since I read any Trek novels written by those who were a part of the series from its inception. The Menagerie was original introduction to these characters (i.e. Christopher Pike, Vina, and Number One).
Have you been following Star Trek: Vanguard?