I posted video of opening a 2013 cargo trunk manually in the last thread. In my Fit, I kept the cover off (because it stuck). The Fit was a bit easier than jamming a screwdriver into a tiny hole like this.
Never happening trying to escape.
IF her CRV hatch had already been open, or had release button up front by the driver's door, that she hit to open it and it shut somehow, maybe? But then why would you bypass 2 closer open windows?
Her body floating back into the cargo, and then coming to rest horizontally across the cargo area, which is what I have gathered from AWPs video and DIver Nick's recording/explanations as he moved around the vehicle underwater, just doesn't make any sense to me. Especially if she started from the driver's seat.