She made one kick, under controlled conditions, using improper technique (in a game, she would be using 2, not 4, steps).
Don't get me wrong - I've said it multiple times here, I hope she goes for it, and I think if she took the time to learn how to do it, she has the raw talent to do it (although it likely would mean the end of her soccer career, and I don't know if she would want to do that for the chance for a few years playing football). But saying she would be a good coach is similar to saying that Tim Tebow would be a good quarterback technique coach in the NFL, because he had success in college (with lousy technique, which is why he failed in the NFL) - actually, Tebow is closer, since at least he played the same sport, but it was as good an analogy as I could think of over lunch.