Jemma can happily forget the telepath (mostly) while riding down, as she compares notes with the other scientists. Of course, her commentary is more geared towards the toxic snakes and insects. When they get to the release site, she stays in the truck... mostly so she can keep a hand on the emergency recall button for Milliways without drawing attention. They're out where the telepath tends to live, so it's good to take precautions.