I hope it isn't all too stressful for you. I would see how she goes over the next week. It can be a vicious circle as if we start getting stressed about it, they seem to pick up on it and get stressed too. But there is nothing more stressy than the noise of bar chewing.
If it's driving you mad, then for now you could weave cardboard in the bars (eg strips of cut up cereal packet) in the area she mainly chews. Obviously she could move to any area. I suspect she might not be doing at night though - only when she can see you.
As Beryl says, letting her out as much as possible for now would help as well, while she's settling to the cages. It may have become a habit but she hasn't fully settled in the cage yet and may realise it's better than the previous one and more for her to do.
They do actually make full height perspex panels for that cage if it doesn't settle down - the problem is it is expensive. And you've only just bought the cage.
The full perspex screens cost more than the cage. Basically all the side bar panels are replaced with perspex panels (still has a door at the front) and only the roof is left as bars. It then becomes a large perspex tank.
I think though, things will settle down. In the next couple of weeks with a regular out of cage routine.
