Jilly and Karen regularly need to maintain the engines of their ship. A hazardous environment, so extra protective clothing is needed there.
Naturally, extensive training is needed to operate in these suits, so Jilly shows Karen the ropes of how it's done. What do you do when your air supply suddenly cuts out? What do you do when suddenly your suit starts pleasuring you? Do you say "yes more" when you're running out of breath, just to get your air back?
All very important questions!