You should see if there is a low cost legal clinic available in your area. The courthouse clerk may have information - also you might check at your church or other social services agency.
Generally speaking, fault-based divorces are very difficult and costly to obtain.
Her interest will best be served by hiring an attorney. If this person is of limited resources, I would recommend calling the county bar association or legal aid office to see if a pro-bono attorney is available.
Additionally, she could file for spousal support. Her husband would be required to pay monthly support until they were legally divorced. This often acts as a motivator for the payor spouse to consent to the divorce.
She can also request that the court require her husband to pay counsel fees and court costs she incurrs as a result of the divorce.
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