How much dishonesty is worth going to a supervisor about?

Question: “I had vaguely known a particular person who applied for an admin position here recently, and she seemed very cool and capable, and a few weeks into the job she’s really doing well. But I just found out from a friend that on the résumé she submitted, she lied about having a degree and invented a couple of qualifications. What should I do with this information? Should I even do anything at all?” – Suzanne, Gallery Assistant

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