Make them wear a mask, along with yourself, also have a face sheild in case they start coughing blood. Keep them in a room by themselve, only come in to bring food and water. Have a seperate bathroom that they alone use. Not 100% sure this will stop much, but put a towel under the door frame (again not sure how effective it will be.
Susan won't be feeling normal sleep nor normal heart rate because sleep deprivation is a serious issue. She would have an upset stomach and might even have a diarrhea.
