then is there any issue regarding my ban in her file?Does she have a job offer and approved LMIA? Or eligible under LMIA exemption? She needs to find employment with LMIA in her field. So once she has a job offer the employer pays $1k and files for the LMIA showing that no Canadian or PR could do the job, only your wife. Then once she has LMIA, she applies for a closed work permit. Few employers go through the process. If no to both, then it will be difficult. Processing may be long depending where you live.
She has studied in information technology field and she has experience in office admin job then she has find LMIa in her job experience field or in field of study???