What do you mean the Christ Confessor? In Matthew 28 , Peter isn’t mentioned, but Mary finds the empty tomb. In John 20 and Luke 24, Peter runs to the tomb after being told by Mary. In all of these accounts, Peter is given a position which appears to be “lesser” than Mary Magdelene. In Mark, she was too afraid to tell anyone until Jesus appeared to her and reassured her (John goes into detail about this, and notes how she was crying in distress). If she actually didn’t tell anyone permanently, that fact wouldn’t have been recorded.
Also worth mentioning, she had seven demons driven out. Wasn’t a whore. This is basically just a weirdly elaborate theory which doesn’t really hold any water or value whatsoever.