Has she asked her coaches? I always welcomed this kind of question as a coach. I had a silver who had bent legs and flexed feet in her lap pass wondering why she wasn't scoring well on floor. I pointed out that she had a fall's worth of form deductions in her leap pass alone. Once she realized that, she put more effort into making her corrections at practice. Sometimes kids just genuinely don't understand.
Tell her to say something like "I feel like beam is a strong event for me, so I'm confused about why I'm not scoring higher. What are my biggest deductions?" In the case of the fall, ask "I know a fall is 0.5, but did it also cause me to lose some bonus or start value?" If her coaches don't know why she's scoring this way, that would be concerning to me.
I was part of a gym where the coaches actively sought to understand these things and regularly went to state Congress and sought feedback from the state judging chair so that we could learn what the judges are looking for.
And yes, the more skills you do, the more opportunities for deductions. Have you looked at the execution scores on beam for the elites? Rarely an 8 to be found.
