Conversation so far:
Did Marilyn Chambers work in Hollytwood?
Marilyn Chambers believed her celebrity as the star of Behind the Green Door and the Ivory Snow girl would be a stepping stone to other endeavors.

Question: What was she doing in this period?
Self-contained rewrite: What was Marilyn Chambers doing in this period when she believed her celebrity as the star of Behind the Green Door and the Ivory Snow girl would be a stepping stone to other endeavors?