Take them off. throw her in the shower and get it clean then put new ones on. Im guessing she cant do it for herself by the fact that she needs help but shes your sister, she wont mine you helping her if shes shit herself ... trust
It used to be your best friend who did that. Now it's your sister? LOL. You do have some weird fetishes going on there.HELP ME PLEASE!!!1
Tell her it's disgustingHow do I change tampons at school?