Didn’t I read that she accepted a place in the debate in Tampa?
You did, but it was a mistaken report. They later clarified that she was speaking at today’s rally, not that she was confirmed for the debate.
She was invited to the debate, but as of yesterday, she had not announced an acceptance.
It would fit with this speech though if she accepted and showed up, but still didn’t announce — kind of like the unannounced candidate strategy. Which would also work if she isn’t running but wants to put the fear of God into the other candidates.