I don't think she honestly believes she's going to win the tribunal. I think she knows she's toast. I think her whole schtick here is to go out with all guns blazing because it's the only way she will secure whatever business she manages to manoeuvre herself into afterwards.
The woman clearly has no qualms about manipulating vulnerable people for her financial gain. She cannot believe the GMC will overlook her breaches of their standards, so she must know the writing is on the wall.
Asking for anecdotes to take into the tribunal isn't about providing evidence for the tribunal, it's a PR display for all her customers. She's a complete charlatan.