It sounds like an Action driver to me. Taking a risk to tell someone something could be presented as a decision, especially if there was a lot of deliberation or if she just decided to do so out of the blue. But don't you feel you've presented it with the action being the important thing?
Plus, accidentally exposing information and someone reacting to that, are both definitely actions. I think your Final Driver is really a combination of all these things.
That decision that the influence character presents to the MC is in no way a Decision driver because it doesn't get acted upon. I had a similar scenario for the midpoint driver in my novel. There's a bunch of debate in that thread, but in hindsight (now that the novel is done and I'm revising it) @MWollaeger 's answer at the top is the most clear and accurate picture. The deliberating gets them nowhere, and it doesn't matter what they would have chosen, because the action (fall) is what caused them all to jump.
P.S. Glad to hear you're feeling better and out of the hospital! Not sure what part of the world you're in, but I hope you and your loved ones are safe and doing okay.