Kev and Flush,
Take a look at the first three bursts of fireworks in your video. Watch the water, not the fireworks themselves.
Note: it is only a half face that appears, her right side, the viewer’s left. Almost a perfect split. I will also help out by saying the base of the fireworks themselves, as they first “streak” to the sky, form the eyelashes of her right eye. The eye itself is maybe half in view, if that; the “stage/platform” acting as a hat pulled low.
I’ll give you some more time. My lovely bride didn’t see her at first until I told her the above. Plus, stepping back helps. I am viewing via my smartphone. Haven’t tried with a larger screen.
It’s one of those things whereby if you find and see it yourself, it’s much more fascinating or intriguing. Something like that!
Jeff