There's a goddess of forgetting in ancient Greek mythology - Apparently.
In ancient Greek mythology, there was a goddess named Mnemósýnē's (forgetfulness) antithesis: Mnēsosýnē's (memory) counterpart, Forgetting. However, the goddess of forgetting was actually Mnémosyne's daughter, Mnemésis, but more fittingly, her antithesis was Lethe's sister, Mnemósýnē's (Forgetfulness), not to be confused with the river Lethe, which was the river of forgetting. Forgetting, also known as Oubli, was a minor goddess who personified the act of forgetting, often depicted as a companion to the ferryman Charon.