A (basic option)
It's just talking for an hour and 20 minutes, not "acting" for 80 minutes.
And that's if the entire movie is narrated and not filled full of interviews and dramatic recreations, and reality footage of science shit actually happening...
Her entire narration, hello this is what we are about, 6 or 7 30-second joiners between evidence, and then a round up, top off and sign out... That sounds like she is in the movie for 20 minutes.
Most of her time in the recording booth will be waiting for the techs to get shit sorted.
So 5 takes on everything, and that's still less than 2 hours before she can roll out of there with a fist full of cash.