A major factor in chess at scholastic level is to be able to spot captures, so we’re still not quite up to Sicilian Najdorf level. The little girl at 2.49 could have taken the rook with her queen, but then she was also in check from the queen on c8. Did her opponent say that she had to move her king after the rook check?
Someone get the arbiter!!
I’ve heard that suicide chess is good for developing this though it’s also going to get better just with experience. There’s a lot going on on the chess board and it needs time to thoroughly grasp the thing.