"I recently discovered that a friend had been lying and conning me for about eight years. As the friendship dissolved, I realized she'd played everyone in her life against the others, to the point of telling people I had been abusing her daughter.
During the friendship, she told me horror stories about a friend that I met through her. As with most con artists, her lies were based on readily available information, making them seem very plausible. Because of this, I told the mutual friend I thought she was neglecting her son and being a bad parent. Now that I don't believe a word this con artist has ever told me, I feel a tremendous amount of guilt and regret having accused and lectured the mutual friend.
This mutual friend (who is still friends with the con artist) cut off all ties with me, but should I reach out to her and explain everything or let it rest? The ex-friend has been telling terrible lies about me since I stopped talking to the mutual friend."