It's not obvious on the dummy but, on the photo of Charlotte, it's clear that the pleats on the front of the skirt are off centre, too.
I think the waistband has been tightened, the bodice pleated down to match (and possibly taken in at the sides, too), and then the skirt repleated to match it. I suspect they've tried to adjust the skirt length from the waistline, too. Together, that would explain both the wonky hem and the uneven pleats.
They'd have probably gotten away with a lot of that on a more forgiving fabric.
Then the combination of lifting the neckline and possibly taking it in at the sides has messed with the armscye shape, which is why the sleeves sit wrong.
Remaking was the only way to get a high standard result, but clearly it didn't happen.