I wouldn't. Well, actually I did once and that is why I wouldn't.
In the city where I live there are many places where you can go to view the fireworks. Some are crowded and close to the action, others are much further away and slightly less crowded. In addition to holidays, there is a baseball stadium that sets up fireworks most Fridays in the summer.
Where I live you can hear (but can't see the fireworks). Ginger had never reacted to the sound (although it is far away), was used to crowds, and never reacted to thunder, so when we were headed to the fireworks one Fourth of July, we took her along.
Let me begin by telling you that our vantage point was a hilltop high above the city and about 2.5 miles from the actual site where the fireworks were being set off.
It's a relaxed atmosphere with people on blankets and lawn chairs and room to spread out.
Before the event was over, I thought Ginger would have a heart attack.
Between the bottle rockets (which were really very minimal) and the bright lights of the fireworks (followed by the booms), she was not happy and ended up spending her time under a blanket on my lap, clawing me like crazy whenever she got spooked.
Boy did I feel like an idiot.
Unless you are really, 100% certain, your girl won't be afraid, I'd leave her at home.