Her Wet and Dirty Shower

We crossed the bathroom to the shower, and Charlotte opened the cubicle door and led me inside."Sit on the floor, " she said softly. I did as I was told and sat meekly at her feet. She gazed down at me and gave me a shy smile."Are you sure, baby?" she asked. I nodded softly. I did want this, I realised. I wanted it so badly that I began to tremble with anticipation. Ella and Charlotte are young lesbians who enjoy a wild sex life, and there isn't a kink or fetish they haven't explored.
Or so they thought. But when Ella witnesses Charlotte relieving herself in an alley late one night, it triggers a burning desire that consumes her. Ella is desperate for her girlfriend to repeat the experience, but will Charlotte agree?