Sooooo...being embarrassed to have used your tampons she thinks it wiser to return the dirty used parts under your sink than to put it in the trash? ewwwww I suppose there is always a chance you also put your used tampon covers under the sink too so it wouldn't go unnoticed lol. Sigh. Does your bathroom door lock? I would be tempted to just lock it in the morning then once all kids have arrived use a coat hanger to unlock it through the doorknob hole lol. Of course, you'd have to do that forever so easier just to tell them to go across the street.