Her eyes drawn to movement, she could see the sheets moving. Except...no! It was Emma's clothing! It certainly was the older girl she had met in the library, who was certainly doing something naughty. Feeling herself blush, her eyes tipped upward to look at the brunette's face.
Emma looked like she was enjoying herself! Wishing she could see more, from a closer vantage point, she dare not risk it. Emma seemed like a dangerous girl, and wouldn't like her privacy invaded she was certain. Inching her hand down, it went up under her skirt. Finding it's way into her panties, she began to rub her folds as she watched the older girl pleasure herself.