As Jennifer shifts closer, she feels Diana's fingers shift in response, brushing against her crotch, which only deepens the former's blush. At first, Diana doesn't seem to notice, which Jennifer is grateful for... but about 10 seconds later, she feels Diana's hand shift around, almost as if doing a double take, noticing the bulge.
"Jennifer?" The other girl whispers, turning to face her... then pausing as she spots her friend's red face, and notices the uncomfortable shifting. "Is something wrong?" She eventually asks, maintaining her whisper. "You're really red, and... is there something in your pants?"
Jennifer shook her head, but her friend didn't seem entirely convinced, slipping her hand under Jennifer's skirt. Jennifer blushed even brighter, Diana's hand landing more directly on her privates, and she's sure she's been caught now.
"Are you sure...?" Diana asked, concern in her tone as she notices Jennifer shift closer again, the girl nodding. She's keeping her voice down to not worry the others, but with her hand resting on the mysterious bulge, she wants to know what that's about.