Yeah, I remember it and no, she wasn't technically a superheroine.
It was loosly based on the idea that the goddess Isis
would willingly completely possess somebody at the command of that particular somebody (who just happened to possess the "amulet") without going through an exhaustive ritual. It was tacked onto the Captain Marvel (sp?) tv show to make the "Hour of Power (if i remember correctly) and there were a couple of times they (the writers) merged the two shows together. :shrug:Phyllis
(aka Sidhe Uaine or Gaia