You can tell she was completely aware of that bullshyt the moment she got on the jet ski.
On some "I bet their wrecklessness is going to head this way."
Then when it did she had that "Yup, they're headed this way. I'm not going to sit here and give a chance for anything to happen to me." reaction vs "Hmmmm. I wonder what's going to happen." deer in headlights reaction.
At the end she's on some "Knew it."
Not only reflexes, but great awareness.