I was thinking Beatrisa was the one who was 12 and Michelle was 13, but Wikipedia says the reverse. I'm sure there are fans with better memories than both Wikipedia and me. (Either that or with better research skills than me).
They were both 12: Kwan, born July 1980, in 1993, and Liang, born March 1988, in 2001. (Remember, Nationals is held in January – in the past, sometimes in February; so the years they turned 13 later in the year they were still 12 at Nationals.)
Both finished 6[SUP]th[/SUP] in their first senior seasons.
Carol Heiss, for example, was born in January 1940 and placed 2nd at 1953 Nationals. I'd have to check elsewhere if that was before or after her birthday. In any case, she did go to Worlds that year, placing 4th, when she was already 13. That was a different era, with no age limits internationally AFAIK, and also no junior circuit.
I believe that Priscilla Hill was the youngest senior ladies' competitor at Nationals as an 11-year-old.
I think there have also occasionally been young pre-teen girls skating senior pairs.
It’s easy to for USFS to not allow Alysa to win. Just look at US Champs men’s in 2016. Nathan landed four quads but still got third and Adam won after falling and under rotating his only quad.
It's not that easy. If there were some conspiracy to make sure skater A wins or skater B doesn't win, there would have to be a plan for the tech panel to downgrade many of B's jumps even if they looked clean in real time and on video, and to call all of A's jumps as clean unless they were really obviously not rotated, and for the panel to award level 4 to all A's non-jump elements whether deserved or not and to none of B's even if deserved.
Of course it would also help for judges in on the plan to intentionally inflate GOEs and PCS for A and intentionally undermark B.
But all that cheating could do would be to shift the probability strongly in A's favor. If A had a great performance and B really bombed, there wouldn't be much the cheaters could do to shift the results the opposite direction.
Assuming the plan was to be more subtle about just giving A some edge over B, to tip a close contest in A's direction but otherwise let the chips fall where they may, then the conspirators would have even less control. The tech panel doesn't know what GOEs and PCS the judges are awarding. The judges don't know what levels the tech panel is calling. And all of them are too busy actually calling and scoring all the skaters to keep close track of the math within a point or two, including PCS factoring for the ladies and remembering the exact short program scores of each of the contenders. They don't have the necessary information to keep track any closer than that at all.
If judges know that B outjumped A significantly but believe that skater A outskated and outperformed B, they can make a point of scoring A much higher than B on GOEs and PCS. But they can't calculate how the TES and PCS will balance each other for these two skaters and for any others down to tenths and hundredths of points. Even if they try to force a win for A, and even if both skaters perform more or less as expected, if it's a close contest a few little miscalculations could give B the win after all.
And then the conspiracy theorists would accuse the judges after the fact of intentionally giving the win to B.