Maybe it's one of those stain resistant fabrics. But those aren't usually soft.
You just don't want it to reach to a point that it's scary for her. That's when it gets out of hand. And she shouldn't be scared of it, it's natural to her. Part of her.
You should. Blackmail for when she's a teenager trying to bring home boys. But if you ever change your mind, Hansel, let me know. I owe you. Big time.