I hope those those who needed a reminder about the capabilities of girls or women see this news.
However, (and I realize this will be controversial) imo this result doesn't contradict the general notion that girls (in mainstream American culture) are discouraged (by societal and cultural pressures) from engaging in science and engineering. Two of the three girls are Indian-American and these girls presumably don't face the same pressures that most other American girls face.
For that matter, I think that women in countries like India, China, Russia etc. are much more represented in science and engineering (in their countries) than native-born women in the US.