The woman sneaks into the library bathroom, her heart racing with excitement, as she locks the door behind her. She leans against the sink, her hand slipping inside her panties, as she starts to rub her clit. She moans with pleasure, feeling the wetness between her legs, as she imagines someone catching her. She slides a finger inside herself, the sensation driving her wild with desire. She moves her finger in and out of her pussy, her hips bucking with pleasure, as she brings herself closer and closer to orgasm. She bites her lip, trying to stifle her moans, as she feels the pleasure building inside her. Finally, she can't take it anymore and she comes, her body shaking with pleasure. She leans against the sink, panting and spent, as she catches her breath. She cleans herself up, straightens her clothes, and unlocks the door. She walks out of the bathroom, her heart still racing with excitement, knowing that she has just had an amazing orgasm in the library bathroom.