Suppose you helped run a place, and there were two people, who we will call Person A and Person B. Person A reported Person B to you for something like harassment or maybe theft of property. Maybe you have a one-chance policy or maybe Person B is a repeat offender, but in any case, you removed Person B from the place you help run. However, for some reason, Person A eventually had a change of heart or expressed guilt over how it played out (or maybe they just miss them) and asked you if Person B could be forgiven some time afterward. Would you unban Person B? And/or would you respond some other way?
Sounds like workplace behavioural policy, which is a massive and well written about topic. Ask a manager threads elsewhere will probably be able to give you a clearer answer. There’s no one answer. “That top looks nice on you Jane” is not the same as “Here look my dick in the copy room with the door shut” kinda situation. Jane would be fair to report either if she felt uncomfortable and one would be a conversational warning from HR (One strike i guess) and the other would be a formal warning, probably firing for some kind of gross workplace misconduct.