So the director of one lab, hearing about COVID-19, apparently went "oh shit, that could have come from MY lab!" Later, she publicly announced that it's fine, it didn't come from her lab after all, then the lab was shut down, all records suppressed, and China has prevented any independent investigation.
Even if we take this at face value, and the denials were fully truthful, this tells us that:
1) it didn't leak in that form from that specific lab (of the several operating at the Virology Institute), assuming they had good record keeping. But it might have leaked from a different lab, or it might have leaked from her lab and then mutated prior to being discovered. (And, while it might seem unlikely that it mutated without any trace of intermediate forms being found, that's the exact assumption the zoonotic theory already requires...)
2) Someone in a position to know believed that a leak was plausible based on her knowledge of the types of research being performed, the quantities of material they had on hand, the safety protocols they were following, etc.
I suppose I just find that less reassuring than you do. :)
> when she could prove that the outbreak in Wuhan was not any strain that the lab had a record of storing.
You answered your own question. That's the point here: the evidence does not point to a lab leak.