Tickled 'Til She Pees

When Riley's mother insists on an au pair to accompany her around France, Riley protests - she's way too old to need a babysitter. But after a humiliating public accident in front of Alice, the au pair, both of them realize that they get along much better if Riley *doesn't* act her age after all! Warning: this 7200 word story features lesbian watersports, tickling, accidental and deliberate wetting, diapers, age play, oral sex, orgasm denial, and a very demanding Mummy; adults only!
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Excerpt:

I barely could translate the Hors Service on a sign on the bathroom door €“ out of service €“ but when I saw the uninviting X even from a distance, my heart sank and my stomach twisted. Alice found a nearby staffer and had a brief conversation, in which the only word that I caught was toilette. Gestures from them both, Alice€s look of frustration, and she pulled me away from the staffer in a hurry.

€œThere might be toilets open at the train station, he said that€s the nearest. But he doesn€t know if they€re kept open on Sundays.€

€œWhy the fuck wouldn€t they have bathrooms?€ I groaned. The wine, in addition to causing this dilemma, was making me uninhibited, and I crossed my legs tightly.

When Alice led me back to the field, she kept one hand on my arm €“ a small comfort, but I was so upset, and felt so fucking helpless and young, that I accepted her touch. I sat with my legs tightly together, my lower belly aching with my desperation. I grew increasingly more certain that even if I did wait it out for the train, I€d never actually make it. Fuck.

We couldn€t have been more than ten minutes in when Alice looked over to see how tense and miserable I was. €œRiley.€

€œWhat,€ I snapped at her, but she overlooked my tone.

€œWill you be okay?€

€œNo. I was fully in panic mode now, my bladder full and painful, threatening to let go in my pants. I pushed a hand between my legs as I stood. €œGet me away from here,€ I hissed. €œBefore everyone sees me have an accident.€

Alice€s face was full of pity, but she quickly led me to a more secluded area. She hesitated: €œYou€re going to hate when I€m going to say.€

€œNot anymore than I already hate everything about this situation.€

This got a small smile out of Alice. But then, her hesitant offer: €œI€ve got nappies.€