Really embarring incident (Help!)?

First of all, don't allow yourself to be put in a similar situation again. It appears your young cousin may have more than a ping interest in you and in a rather off beat way is attempting to tell you she likes you. Don't be alone with her at any time. She could very possibly be a real source of trouble for you. Be very alert to any interactions she may have planned for you. Guard your privacy very carefully. Good luck.