This fourth and last frame shows the ball has clearly left Nika's hand and the shot clock has expired
There is clearly NOT evidence to over-rule a call on the floor (I'm assuming the rules about over-ruling clock calls are the same as any other call: clear evidence).
I think you could make a case that in frame #3 her hand is still in contact with the ball. It's not a great case and I certainly wouldn't call it conclusive but at least it's close.
In frame #4 the ball is gone, not close. So look at the sequence of #2,3 and 4 and you can easily interpolate (assuming your frames are of equal interval - about 1/25 of a second I'd guess) exactly where the ball would be halfway between frames 3 and 4. Clearly out of her hand. Interpolate from that, backward: STILL out of her hand. We're now in the neighborhood of 1/100 of a second and it's unreasonable to expect human refs to make those kinds of judgements. So you
don't make those judgements on a monitor: the floor call stands.
Now you could object that "interpolate" is not evidence. Yet that's exactly what they
had to do to make an incorrect over-rule decision, since no matter what equipment they had or resolution of the monitor, no single frame (or moment if their sources are cruder than frame-by-frame) was conclusive. There is zero evidence that her hand was on the ball when the clock ran out.
I can't believe in another game of a hundred or so memorable moments, including Nika sinking another key three, I'm still thinking about this call. I assume you folks all know that fan is short for fanatic.