Hopefully the fireworks have finished now, but something else that can help is a thundershirt, which is a fitted, soft coat designed to fit a dog closely and have a calming effect. If you don't want to buy a thundershirt, or want to get an idea of if it will work or not, try an old t shirt or a babygrow and see if she finds that calming. It needs to be a snug fit without being too tight.