What is the ruling on money saved and spent from working on forging contracts in a lawyer's office? And how can one atone for that?

A woman working as a secretary for a man who is a non-mahram (definition) (stranger) to her is forbidden due to the seclusion (khalwa (definition)) and mixing (ikhtilat) involved. The prohibition becomes even more severe if she assists her manager in lying, forgery, and unlawfully devouring people's wealth. The questioner must leave this job and replace it with work that is suitable for her and does not conflict with her religion and honor. The money earned from this job is ill-gotten (khabith) wealth. What was spent from it before repentance incurs no sin. As for the remainder, it must be disposed of by spending it on charitable causes, such as the poor and needy, along with regret and a firm resolve not to return to such a thing.