You do, Marla swallows

"Fuck, I´m about to-"
Marla reacts fast. She turns around and drops to her knees. She puts out her tounge as you jerk off.
"Give this slut her reward. Please give me your cum mister" She mimics the same voice she did earlier. "Please fill my mouth. I´ll promise to swallow.."
With a heavy moan, you shoot your cum in her mouth. She quickly bends her head forward, eager to take it all. You shoot your load, shot for shot, and Marla swallows without any problem.
Then she gets up and wipes her mouth. "Now I haven´t cum yet."
Just as you want to offer to go down on her, a voice says: "Hello? Are you the guys that are stuck`I´m gonna get the elevator running again now."
"I guess what will have to wait for the hike. You owe me."

Moments later you´re both freed, and part ways to get ready for the mountains.