Saalt Teen Menstrual Cup – Reusable Period Cup – Made for Comfortable, Leak-Free Protection Up to 12 Hours – BPA & Latex Free - Wild Rose

Saalt has a "Teen" cup version, its bright pink and the smallest one I have seen. This might be a really good option for you, also get a Pixie cup applicator to help with insertion and placement, its been such a handy tool and life changer for me using cups This is the Saalt Teen on Amazon: https://a.co/d/0hK5oF9F This is the Pixie applicator: https://a.co/d/0fyZBobk