This says you are 25 years old, so your wife is probably around this age too. It may be that she does not have the required experience. If she gets called for an interview she should ask for feedback to find where she is going wrong. If she does not get as far as this it may be there are too many applicants. I am not surprised that these people do not get back to you, as she is the applicant and not you. The motivation and the calls have to come from your wife.