I have no idea what happened with Tianna so this is just an observation. I didn't see her perform but know a couple of people who did and they said she was great. Also, maybe if there was a disagreement one side did give notice to the other. It would be unlikely that Tianna would have put it on her website if she elected to leave or if the production has asked her to leave. Just because it isn't out there doesn't mean that one side was unhappy and gave notice to the other.