Jessica.

Jessica has had serious OCD problems since birth. At a young age, Jessica could be found regularly creating, altering and recreating patterns with blocks in her room. Once she starts washing her hands, it's nigh impossible to get her to stop. Jessica is not bothered by her condition, in fact, sometimes she doesn't even seem aware of it. If Jessica was to win, she would use her winnings to keep up her stock of hand soap, plenty of blocks, and all other means of feeding her condition.