Changing the locks after someone breaks your trust isn’t petty. It’s maintenance.

Protecting yourself after somebody proves untrustworthy gets called drama, usually by people who were not the ones hurt. Adjusting access after new information is ordinary upkeep rather than revenge, and it does not require you to hate anybody. You can forgive a person and still decline to hand them the key again, because those are two separate decisions.

If somebody has broken something recently, work out what they currently hold: your passwords, your stories, your schedule. Change what needs changing without making a speech about it. Forgiveness, if it comes, can arrive later and does not cancel this step.