Her imagination

Zoe jumped at the noise, but when she turned around, she was met with air. Zoe thought about all the things it could be. A squirrel. A lost dog. A madman come to drag her off for sex against her will. That last thought lit a fire in between the young redhead's legs. She was horny and she needed to do something about it.

Her thought's turned to places she could go to pleasure herself. She could walk into the woods in front of her, and risk being caught fingering herself outdoors. Or there was a small building for public toilets about a 5 minute walk down the river. No-one ever went there so she would have privacy.