Ooola is flashing back to when she became Munda Wunch (that is the pic of what she looked like back in the early 30’s). That was the stage name they gave her. Now, the producer in the 1980’s, you recall, sent Oop back to find out whatever had happened to Munda Wunch. Here’s where the time travel thing comes in.
So, that solved the mystery of why Munda Wunch had disappeared without a trace back in the 30’s. The Hollywood producer had his answer. He then asked Ooola to star in movie he was making “The Munda Wunch Story”.
So Ooola had actually acted twice before this. BTW, that arc went from 9/18/80 to about 1/5/81. Lots of story action and 3 or 4 panels a day, 6 days a week. That same story nowdays would have taken 6 or 8 months to tell, with a lot less detail in the art work.