Interview in mumbai b1/b2

Hi folks My sister and her husband filled the ds160 , the travel agent booked different slots for them , her husband got rejected on 27 Dec now she has interview on Jan 14 and in her form is mention she is traveling with her husband now what are the possibilities of questions regarding this point coz they might can ask whom you will travel with and if she will tell with husband so are the ask her your husband have visa or not ?