To summarize:
I received a phone call (and an e-mail letter, posted above) from two men who I have met in person. They received this report from the lady herself, in person. The two men in question are long-time SSPX Traditional Catholics, who have been supporting the Resistance (including Bishop Williamson, Fr. Zendejas, etc.) for some time now. They have been generous supporters of the Resistance, and I would not entertain any suggestion that they would be guilty of slander or lying about something like this.
You don't make major sacrifices for the Faith one week (go on a double-digit hour road trip to attend a Resistance Mass and meet Bishop Williamson), and then sell your soul for a stupid, fruitless sin like slandering a priest just a few months later. That doesn't happen.
So if this story wasn't true, it would have to be the lady in question who made it up/distorted the facts/etc.