A person in my department has been receiving a recurring meeting on her Outlook calendar since 2012. She was an attendee. The project is long over. The originator who set up the recurring meeting no longer has the same email from 2012 and the meeting does not show up on his current email account Outlook calendar. How can we remove the recurring meeting from her calendar? She is not able to delete, but is able to decline, however that means declining every week.