ya think?
A ref doesn't "throw up [his/her] your hand" at the end of a match. When wrestling should cease (i.e., when wrestlers are out of bounds, the period ends, etc.), the ref raises one hand, while also blowing their whistle. That's exactly what the ref did at the end of this match.
Others have pointed out the "flipped out from underneath him in a backward somersault" was a granby roll.
And FWIW, it's hard to figure what the kid that lost was doing before he got reversed. He was trailing 9-3, very late in the State Championship match, and didn't appear to have any clue how to work toward a tilt, which he desperately needed, and then got out to the side, with only an arm around the waist, with his opponent in a 4-point stance on the mat. A cradle opportunity was there for the taking (or at least attempting) if he would have given up on the waist (which he didn't seem to have very tight), but he had lost control of the wrist, was out to the side ... in short, he was not close to tilting his opponent, and his opponent could have used a couple of different moves to easily get a reversal.
Congrats to Heaven Fitch. I see girls winning matches pretty much every weekend during the youth season, but I haven't seen a girl win States in high school.