Don't let her size or the act fool you, Marie can be deadly when she fights off people who try to take her by force, especially those who treat her like a kid. The best thing for her is to acknowledge her age and treat her like an adult to more quickly earn her trust. She has several outfits but her battle leotard not only allows for the most binding options but leaves all three of her weak spots vulnerable: Her butt, hips and spine. Because of her weak spots it's often better to leave her hair in twintails. For her gag, using anything not deemed "kiddy" is the best way to go.