Here's why:
* Misplaced Modifier: The phrase "edging her way excitedly through the crowd" seems to be modifying "noise," which doesn't make sense. Noise can't edge through a crowd.
* Dangling Modifier: The phrase is also a dangling modifier because it doesn't have a clear subject to modify. It's unclear who or what is "edging their way excitedly through the crowd."
Here are a couple of ways to fix the sentence:
Option 1: Clear subject and modifier:
> "As she excitedly edged her way through the crowd, the noise was deafening."
Option 2: Combine the phrases:
> "The noise was deafening as she excitedly edged her way through the crowd."
Both options make the sentence clearer and grammatically correct.